diff --git a/src/home/homed-home.c b/src/home/homed-home.c
index 6e9cfd27767..d16509d5743 100644
--- a/src/home/homed-home.c
+++ b/src/home/homed-home.c
@@ -11,6 +11,7 @@
 #include "blockdev-util.h"
 #include "btrfs-util.h"
 #include "bus-common-errors.h"
+#include "bus-locator.h"
 #include "data-fd-util.h"
 #include "env-util.h"
 #include "errno-list.h"
@@ -2117,15 +2118,7 @@ int home_killall(Home *h) {
         if (asprintf(&unit, "user-" UID_FMT ".slice", h->uid) < 0)
                 return log_oom();
 
-        r = sd_bus_call_method(
-                        h->manager->bus,
-                        "org.freedesktop.systemd1",
-                        "/org/freedesktop/systemd1",
-                        "org.freedesktop.systemd1.Manager",
-                        "KillUnit",
-                        &error,
-                        NULL,
-                        "ssi", unit, "all", SIGKILL);
+        r = bus_call_method(h->manager->bus, bus_systemd_mgr, "KillUnit", &error, NULL, "ssi", unit, "all", SIGKILL);
         if (r < 0)
                 log_full_errno(sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ? LOG_DEBUG : LOG_WARNING,
                                r, "Failed to kill login processes of user, ignoring: %s", bus_error_message(&error, r));
diff --git a/src/hostname/hostnamectl.c b/src/hostname/hostnamectl.c
index a0e949d82c7..8d3cca5c621 100644
--- a/src/hostname/hostnamectl.c
+++ b/src/hostname/hostnamectl.c
@@ -15,6 +15,7 @@
 #include "build.h"
 #include "bus-common-errors.h"
 #include "bus-error.h"
+#include "bus-locator.h"
 #include "bus-map-properties.h"
 #include "format-table.h"
 #include "hostname-setup.h"
@@ -298,13 +299,7 @@ static int get_one_name(sd_bus *bus, const char* attr, char **ret) {
 
         /* This obtains one string property, and copy it if 'ret' is set, or print it otherwise. */
 
-        r = sd_bus_get_property(
-                        bus,
-                        "org.freedesktop.hostname1",
-                        "/org/freedesktop/hostname1",
-                        "org.freedesktop.hostname1",
-                        attr,
-                        &error, &reply, "s");
+        r = bus_get_property(bus, bus_hostname, attr, &error, &reply, "s");
         if (r < 0)
                 return log_error_errno(r, "Could not get property: %s", bus_error_message(&error, r));
 
@@ -408,15 +403,7 @@ static int show_status(int argc, char **argv, void *userdata) {
                 _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
                 const char *text = NULL;
 
-                r = sd_bus_call_method(
-                                bus,
-                                "org.freedesktop.hostname1",
-                                "/org/freedesktop/hostname1",
-                                "org.freedesktop.hostname1",
-                                "Describe",
-                                &error,
-                                &reply,
-                                NULL);
+                r = bus_call_method(bus, bus_hostname, "Describe", &error, &reply, NULL);
                 if (r < 0)
                         return log_error_errno(r, "Could not get description: %s", bus_error_message(&error, r));
 
@@ -448,14 +435,7 @@ static int set_simple_string_internal(sd_bus *bus, sd_bus_error *error, const ch
         if (!error)
                 error = &e;
 
-        r = sd_bus_call_method(
-                        bus,
-                        "org.freedesktop.hostname1",
-                        "/org/freedesktop/hostname1",
-                        "org.freedesktop.hostname1",
-                        method,
-                        error, NULL,
-                        "sb", value, arg_ask_password);
+        r = bus_call_method(bus, bus_hostname, method, error, NULL, "sb", value, arg_ask_password);
         if (r < 0)
                 return log_error_errno(r, "Could not set %s: %s", target, bus_error_message(error, r));
 
diff --git a/src/journal-remote/journal-gatewayd.c b/src/journal-remote/journal-gatewayd.c
index b6e8469922f..4b4eec01855 100644
--- a/src/journal-remote/journal-gatewayd.c
+++ b/src/journal-remote/journal-gatewayd.c
@@ -15,6 +15,7 @@
 
 #include "alloc-util.h"
 #include "build.h"
+#include "bus-locator.h"
 #include "bus-util.h"
 #include "errno-util.h"
 #include "fd-util.h"
@@ -704,14 +705,7 @@ static int get_virtualization(char **v) {
         if (r < 0)
                 return r;
 
-        r = sd_bus_get_property_string(
-                        bus,
-                        "org.freedesktop.systemd1",
-                        "/org/freedesktop/systemd1",
-                        "org.freedesktop.systemd1.Manager",
-                        "Virtualization",
-                        NULL,
-                        &b);
+        r = bus_get_property_string(bus, bus_systemd_mgr, "Virtualization", NULL, &b);
         if (r < 0)
                 return r;
 
diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c
index b0b95311f1c..5f3a121ac9f 100644
--- a/src/journal/journalctl.c
+++ b/src/journal/journalctl.c
@@ -21,6 +21,7 @@
 #include "alloc-util.h"
 #include "build.h"
 #include "bus-error.h"
+#include "bus-locator.h"
 #include "bus-util.h"
 #include "catalog.h"
 #include "chase.h"
@@ -2246,15 +2247,7 @@ static int run(int argc, char *argv[]) {
                 if (r < 0)
                         return log_error_errno(r, "Failed to open system bus: %m");
 
-                r = sd_bus_call_method(
-                                bus,
-                                "org.freedesktop.machine1",
-                                "/org/freedesktop/machine1",
-                                "org.freedesktop.machine1.Manager",
-                                "OpenMachineRootDirectory",
-                                &error,
-                                &reply,
-                                "s", arg_machine);
+                r = bus_call_method(bus, bus_machine_mgr, "OpenMachineRootDirectory", &error, &reply, "s", arg_machine);
                 if (r < 0)
                         return log_error_errno(r, "Failed to open root directory: %s", bus_error_message(&error, r));
 
diff --git a/src/login/inhibit.c b/src/login/inhibit.c
index 25ba848492d..75dba8c08f5 100644
--- a/src/login/inhibit.c
+++ b/src/login/inhibit.c
@@ -11,6 +11,7 @@
 #include "alloc-util.h"
 #include "build.h"
 #include "bus-error.h"
+#include "bus-locator.h"
 #include "bus-util.h"
 #include "fd-util.h"
 #include "format-table.h"
@@ -41,15 +42,7 @@ static int inhibit(sd_bus *bus, sd_bus_error *error) {
         int r;
         int fd;
 
-        r = sd_bus_call_method(
-                        bus,
-                        "org.freedesktop.login1",
-                        "/org/freedesktop/login1",
-                        "org.freedesktop.login1.Manager",
-                        "Inhibit",
-                        error,
-                        &reply,
-                        "ssss", arg_what, arg_who, arg_why, arg_mode);
+        r = bus_call_method(bus, bus_login_mgr, "Inhibit", error, &reply, "ssss", arg_what, arg_who, arg_why, arg_mode);
         if (r < 0)
                 return r;
 
@@ -68,15 +61,7 @@ static int print_inhibitors(sd_bus *bus) {
 
         pager_open(arg_pager_flags);
 
-        r = sd_bus_call_method(
-                        bus,
-                        "org.freedesktop.login1",
-                        "/org/freedesktop/login1",
-                        "org.freedesktop.login1.Manager",
-                        "ListInhibitors",
-                        &error,
-                        &reply,
-                        "");
+        r = bus_call_method(bus, bus_login_mgr, "ListInhibitors", &error, &reply, NULL);
         if (r < 0)
                 return log_error_errno(r, "Could not get active inhibitors: %s", bus_error_message(&error, r));
 
diff --git a/src/login/loginctl.c b/src/login/loginctl.c
index dfc738c6d02..29fc14b5718 100644
--- a/src/login/loginctl.c
+++ b/src/login/loginctl.c
@@ -917,14 +917,7 @@ static int show_user(int argc, char *argv[], void *userdata) {
                 if (r < 0)
                         return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
 
-                r = sd_bus_call_method(
-                                bus,
-                                "org.freedesktop.login1",
-                                "/org/freedesktop/login1",
-                                "org.freedesktop.login1.Manager",
-                                "GetUser",
-                                &error, &reply,
-                                "u", (uint32_t) uid);
+                r = bus_call_method(bus, bus_login_mgr, "GetUser", &error, &reply, "u", (uint32_t) uid);
                 if (r < 0)
                         return log_error_errno(r, "Failed to get user: %s", bus_error_message(&error, r));
 
diff --git a/src/login/logind-user.c b/src/login/logind-user.c
index 3920467f444..6161af9a745 100644
--- a/src/login/logind-user.c
+++ b/src/login/logind-user.c
@@ -6,6 +6,7 @@
 #include "alloc-util.h"
 #include "bus-common-errors.h"
 #include "bus-error.h"
+#include "bus-locator.h"
 #include "bus-util.h"
 #include "cgroup-util.h"
 #include "clean-ipc.h"
@@ -388,13 +389,7 @@ static int user_update_slice(User *u) {
             u->user_record->io_weight == UINT64_MAX)
                 return 0;
 
-        r = sd_bus_message_new_method_call(
-                        u->manager->bus,
-                        &m,
-                        "org.freedesktop.systemd1",
-                        "/org/freedesktop/systemd1",
-                        "org.freedesktop.systemd1.Manager",
-                        "SetUnitProperties");
+        r = bus_message_new_method_call(u->manager->bus, &m, bus_systemd_mgr, "SetUnitProperties");
         if (r < 0)
                 return bus_log_create_error(r);
 
diff --git a/src/login/test-inhibit.c b/src/login/test-inhibit.c
index aefae277fc0..f59cca8fed7 100644
--- a/src/login/test-inhibit.c
+++ b/src/login/test-inhibit.c
@@ -5,6 +5,7 @@
 
 #include "sd-bus.h"
 
+#include "bus-locator.h"
 #include "bus-util.h"
 #include "fd-util.h"
 #include "macro.h"
@@ -16,14 +17,7 @@ static int inhibit(sd_bus *bus, const char *what) {
         int fd;
         int r;
 
-        r = sd_bus_call_method(bus,
-                        "org.freedesktop.login1",
-                        "/org/freedesktop/login1",
-                        "org.freedesktop.login1.Manager",
-                        "Inhibit",
-                        &error,
-                        &reply,
-                        "ssss", what, who, reason, mode);
+        r = bus_call_method(bus, bus_login_mgr, "Inhibit", &error, &reply, "ssss", what, who, reason, mode);
         assert_se(r >= 0);
 
         r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_UNIX_FD, &fd);
@@ -41,14 +35,7 @@ static void print_inhibitors(sd_bus *bus) {
         unsigned n = 0;
         int r;
 
-        r = sd_bus_call_method(bus,
-                        "org.freedesktop.login1",
-                        "/org/freedesktop/login1",
-                        "org.freedesktop.login1.Manager",
-                        "ListInhibitors",
-                        &error,
-                        &reply,
-                        "");
+        r = bus_call_method(bus, bus_login_mgr, "ListInhibitors", &error, &reply, NULL);
         assert_se(r >= 0);
 
         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
diff --git a/src/login/test-session-properties.c b/src/login/test-session-properties.c
index 48aa21abef2..b5b5f60eaaa 100644
--- a/src/login/test-session-properties.c
+++ b/src/login/test-session-properties.c
@@ -57,7 +57,7 @@ TEST(set_type) {
 
         /* Type is reset to the original value when we release control of the session */
         assert_se(!streq(type, "tty"));
-        assert_se(bus_call_method(bus, &session, "ReleaseControl", NULL, NULL, "") >= 0);
+        assert_se(bus_call_method(bus, &session, "ReleaseControl", NULL, NULL, NULL) >= 0);
         type = mfree(type);
         assert_se(bus_get_property_string(bus, &session, "Type", NULL, &type) >= 0);
         assert_se(streq(type, "tty"));
diff --git a/src/login/user-runtime-dir.c b/src/login/user-runtime-dir.c
index f96a2d86623..5a16d1684d7 100644
--- a/src/login/user-runtime-dir.c
+++ b/src/login/user-runtime-dir.c
@@ -6,6 +6,7 @@
 #include "sd-bus.h"
 
 #include "bus-error.h"
+#include "bus-locator.h"
 #include "dev-setup.h"
 #include "format-util.h"
 #include "fs-util.h"
@@ -33,13 +34,13 @@ static int acquire_runtime_dir_properties(uint64_t *size, uint64_t *inodes) {
         if (r < 0)
                 return log_error_errno(r, "Failed to connect to system bus: %m");
 
-        r = sd_bus_get_property_trivial(bus, "org.freedesktop.login1", "/org/freedesktop/login1", "org.freedesktop.login1.Manager", "RuntimeDirectorySize", &error, 't', size);
+        r = bus_get_property_trivial(bus, bus_login_mgr, "RuntimeDirectorySize", &error, 't', size);
         if (r < 0) {
                 log_warning_errno(r, "Failed to acquire runtime directory size, ignoring: %s", bus_error_message(&error, r));
                 *size = physical_memory_scale(10U, 100U); /* 10% */
         }
 
-        r = sd_bus_get_property_trivial(bus, "org.freedesktop.login1", "/org/freedesktop/login1", "org.freedesktop.login1.Manager", "RuntimeDirectoryInodesMax", &error, 't', inodes);
+        r = bus_get_property_trivial(bus, bus_login_mgr, "RuntimeDirectoryInodesMax", &error, 't', inodes);
         if (r < 0) {
                 log_warning_errno(r, "Failed to acquire number of inodes for runtime directory, ignoring: %s", bus_error_message(&error, r));
                 *inodes = DIV_ROUND_UP(*size, 4096);
diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c
index aae619a0a8b..303b76c0c69 100644
--- a/src/network/networkd-manager.c
+++ b/src/network/networkd-manager.c
@@ -148,12 +148,10 @@ static int manager_connect_bus(Manager *m) {
         if (r < 0)
                 return log_error_errno(r, "Failed to request match on Connected signal: %m");
 
-        r = sd_bus_match_signal_async(
+        r = bus_match_signal_async(
                         m->bus,
                         NULL,
-                        "org.freedesktop.login1",
-                        "/org/freedesktop/login1",
-                        "org.freedesktop.login1.Manager",
+                        bus_login_mgr,
                         "PrepareForSleep",
                         match_prepare_for_sleep, NULL, m);
         if (r < 0)
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index 5d49e05064c..74b15dcb44a 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -30,6 +30,7 @@
 #include "btrfs-util.h"
 #include "build.h"
 #include "bus-error.h"
+#include "bus-locator.h"
 #include "bus-util.h"
 #include "cap-list.h"
 #include "capability-util.h"
@@ -2092,13 +2093,7 @@ static int resolved_listening(void) {
         if (r == 0)
                 return 0;
 
-        r = sd_bus_get_property_string(bus,
-                                       "org.freedesktop.resolve1",
-                                       "/org/freedesktop/resolve1",
-                                       "org.freedesktop.resolve1.Manager",
-                                       "DNSStubListener",
-                                       &error,
-                                       &dns_stub_listener_mode);
+        r = bus_get_property_string(bus, bus_resolve_mgr, "DNSStubListener", &error, &dns_stub_listener_mode);
         if (r < 0)
                 return log_debug_errno(r, "Failed to query DNSStubListener property: %s", bus_error_message(&error, r));
 
diff --git a/src/oom/oomctl.c b/src/oom/oomctl.c
index d18f9998410..eb15f508de0 100644
--- a/src/oom/oomctl.c
+++ b/src/oom/oomctl.c
@@ -5,6 +5,7 @@
 
 #include "build.h"
 #include "bus-error.h"
+#include "bus-locator.h"
 #include "copy.h"
 #include "main-func.h"
 #include "pretty-print.h"
@@ -55,15 +56,7 @@ static int dump_state(int argc, char *argv[], void *userdata) {
 
         pager_open(arg_pager_flags);
 
-        r = sd_bus_call_method(
-                        bus,
-                        "org.freedesktop.oom1",
-                        "/org/freedesktop/oom1",
-                        "org.freedesktop.oom1.Manager",
-                        "DumpByFileDescriptor",
-                        &error,
-                        &reply,
-                        NULL);
+        r = bus_call_method(bus, bus_oom_mgr, "DumpByFileDescriptor", &error, &reply, NULL);
         if (r < 0)
                 return log_error_errno(r, "Failed to dump context: %s", bus_error_message(&error, r));
 
diff --git a/src/portable/portable.c b/src/portable/portable.c
index e5f2f38a211..7ab3ac6e975 100644
--- a/src/portable/portable.c
+++ b/src/portable/portable.c
@@ -4,6 +4,7 @@
 
 #include "bus-common-errors.h"
 #include "bus-error.h"
+#include "bus-locator.h"
 #include "chase.h"
 #include "conf-files.h"
 #include "copy.h"
@@ -780,13 +781,7 @@ static int unit_file_is_active(
                 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
                 const char *at, *prefix, *joined;
 
-                r = sd_bus_message_new_method_call(
-                                bus,
-                                &m,
-                                "org.freedesktop.systemd1",
-                                "/org/freedesktop/systemd1",
-                                "org.freedesktop.systemd1.Manager",
-                                "ListUnitsByPatterns");
+                r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "ListUnitsByPatterns");
                 if (r < 0)
                         return r;
 
diff --git a/src/portable/portablectl.c b/src/portable/portablectl.c
index eec9c63d0b8..39f17a8de7b 100644
--- a/src/portable/portablectl.c
+++ b/src/portable/portablectl.c
@@ -242,13 +242,7 @@ static int maybe_reload(sd_bus **bus) {
         if (r < 0)
                 return r;
 
-        r = sd_bus_message_new_method_call(
-                        *bus,
-                        &m,
-                        "org.freedesktop.systemd1",
-                        "/org/freedesktop/systemd1",
-                        "org.freedesktop.systemd1.Manager",
-                        "Reload");
+        r = bus_message_new_method_call(*bus, &m, bus_systemd_mgr, "Reload");
         if (r < 0)
                 return bus_log_create_error(r);
 
@@ -566,12 +560,10 @@ static int maybe_enable_disable(sd_bus *bus, const char *path, bool enable) {
         if (!names)
                 return log_oom();
 
-        r = sd_bus_message_new_method_call(
+        r = bus_message_new_method_call(
                 bus,
                 &m,
-                "org.freedesktop.systemd1",
-                "/org/freedesktop/systemd1",
-                "org.freedesktop.systemd1.Manager",
+                bus_systemd_mgr,
                 enable ? "EnableUnitFilesWithFlags" : "DisableUnitFilesWithFlags");
         if (r < 0)
                 return bus_log_create_error(r);
diff --git a/src/resolve/resolved-bus.c b/src/resolve/resolved-bus.c
index 1c1e5bc3aad..12d0d28babb 100644
--- a/src/resolve/resolved-bus.c
+++ b/src/resolve/resolved-bus.c
@@ -3,6 +3,7 @@
 #include "alloc-util.h"
 #include "bus-common-errors.h"
 #include "bus-get-properties.h"
+#include "bus-locator.h"
 #include "bus-log-control-api.h"
 #include "bus-message-util.h"
 #include "bus-polkit.h"
@@ -2282,12 +2283,10 @@ int manager_connect_bus(Manager *m) {
         if (r < 0)
                 return log_error_errno(r, "Failed to attach bus to event loop: %m");
 
-        r = sd_bus_match_signal_async(
+        r = bus_match_signal_async(
                         m->bus,
                         NULL,
-                        "org.freedesktop.login1",
-                        "/org/freedesktop/login1",
-                        "org.freedesktop.login1.Manager",
+                        bus_login_mgr,
                         "PrepareForSleep",
                         match_prepare_for_sleep,
                         NULL,
diff --git a/src/resolve/test-dnssec-complex.c b/src/resolve/test-dnssec-complex.c
index d8aeb7061f9..976d197bb49 100644
--- a/src/resolve/test-dnssec-complex.c
+++ b/src/resolve/test-dnssec-complex.c
@@ -7,6 +7,7 @@
 #include "af-list.h"
 #include "alloc-util.h"
 #include "bus-common-errors.h"
+#include "bus-locator.h"
 #include "dns-type.h"
 #include "random-util.h"
 #include "resolved-def.h"
@@ -46,13 +47,7 @@ static void test_rr_lookup(sd_bus *bus, const char *name, uint16_t type, const c
                 name = m;
         }
 
-        assert_se(sd_bus_message_new_method_call(
-                                  bus,
-                                  &req,
-                                  "org.freedesktop.resolve1",
-                                  "/org/freedesktop/resolve1",
-                                  "org.freedesktop.resolve1.Manager",
-                                  "ResolveRecord") >= 0);
+        assert_se(bus_message_new_method_call(bus, &req, bus_resolve_mgr, "ResolveRecord") >= 0);
 
         assert_se(sd_bus_message_append(req, "isqqt", 0, name, DNS_CLASS_IN, type, UINT64_C(0)) >= 0);
 
@@ -83,13 +78,7 @@ static void test_hostname_lookup(sd_bus *bus, const char *name, int family, cons
                 name = m;
         }
 
-        assert_se(sd_bus_message_new_method_call(
-                                  bus,
-                                  &req,
-                                  "org.freedesktop.resolve1",
-                                  "/org/freedesktop/resolve1",
-                                  "org.freedesktop.resolve1.Manager",
-                                  "ResolveHostname") >= 0);
+        assert_se(bus_message_new_method_call(bus, &req, bus_resolve_mgr, "ResolveHostname") >= 0);
 
         assert_se(sd_bus_message_append(req, "isit", 0, name, family, UINT64_C(0)) >= 0);
 
diff --git a/src/shared/bus-locator.c b/src/shared/bus-locator.c
index 5b9a6dbc438..ff7a872bdb3 100644
--- a/src/shared/bus-locator.c
+++ b/src/shared/bus-locator.c
@@ -39,6 +39,12 @@ const BusLocator* const bus_network_mgr = &(BusLocator){
         .interface = "org.freedesktop.network1.Manager"
 };
 
+const BusLocator* const bus_oom_mgr = &(BusLocator){
+        .destination = "org.freedesktop.oom1",
+        .path = "/org/freedesktop/oom1",
+        .interface = "org.freedesktop.oom1.Manager"
+};
+
 const BusLocator* const bus_portable_mgr = &(BusLocator){
         .destination = "org.freedesktop.portable1",
         .path = "/org/freedesktop/portable1",
@@ -63,6 +69,12 @@ const BusLocator* const bus_timedate = &(BusLocator){
         .interface = "org.freedesktop.timedate1"
 };
 
+const BusLocator* const bus_timesync_mgr = &(BusLocator){
+        .destination = "org.freedesktop.timesync1",
+        .path = "/org/freedesktop/timesync1",
+        .interface = "org.freedesktop.timesync1.Manager"
+};
+
 const BusLocator* const bus_hostname = &(BusLocator){
         .destination = "org.freedesktop.hostname1",
         .path = "/org/freedesktop/hostname1",
diff --git a/src/shared/bus-locator.h b/src/shared/bus-locator.h
index 9662c906e18..4f50a9727f5 100644
--- a/src/shared/bus-locator.h
+++ b/src/shared/bus-locator.h
@@ -10,16 +10,18 @@ typedef struct BusLocator {
 } BusLocator;
 
 extern const BusLocator* const bus_home_mgr;
+extern const BusLocator* const bus_hostname;
 extern const BusLocator* const bus_import_mgr;
 extern const BusLocator* const bus_locale;
 extern const BusLocator* const bus_login_mgr;
 extern const BusLocator* const bus_machine_mgr;
 extern const BusLocator* const bus_network_mgr;
+extern const BusLocator* const bus_oom_mgr;
 extern const BusLocator* const bus_portable_mgr;
 extern const BusLocator* const bus_resolve_mgr;
 extern const BusLocator* const bus_systemd_mgr;
 extern const BusLocator* const bus_timedate;
-extern const BusLocator* const bus_hostname;
+extern const BusLocator* const bus_timesync_mgr;
 
 /* Shorthand flavors of the sd-bus convenience helpers with destination,path,interface strings encapsulated
  * within a single struct. */
diff --git a/src/sleep/sleep.c b/src/sleep/sleep.c
index a8a451ee1a8..a9445c1a619 100644
--- a/src/sleep/sleep.c
+++ b/src/sleep/sleep.c
@@ -147,13 +147,7 @@ static int lock_all_homes(void) {
         if (r < 0)
                 return log_warning_errno(r, "Failed to connect to system bus, ignoring: %m");
 
-        r = sd_bus_message_new_method_call(
-                        bus,
-                        &m,
-                        "org.freedesktop.home1",
-                        "/org/freedesktop/home1",
-                        "org.freedesktop.home1.Manager",
-                        "LockAllHomes");
+        r = bus_message_new_method_call(bus, &m, bus_home_mgr, "LockAllHomes");
         if (r < 0)
                 return bus_log_create_error(r);
 
diff --git a/src/update-utmp/update-utmp.c b/src/update-utmp/update-utmp.c
index 7449a2321c5..4996272eb3a 100644
--- a/src/update-utmp/update-utmp.c
+++ b/src/update-utmp/update-utmp.c
@@ -13,6 +13,7 @@
 
 #include "alloc-util.h"
 #include "bus-error.h"
+#include "bus-locator.h"
 #include "bus-util.h"
 #include "format-util.h"
 #include "log.h"
@@ -50,14 +51,7 @@ static usec_t get_startup_monotonic_time(Context *c) {
 
         assert(c);
 
-        r = sd_bus_get_property_trivial(
-                        c->bus,
-                        "org.freedesktop.systemd1",
-                        "/org/freedesktop/systemd1",
-                        "org.freedesktop.systemd1.Manager",
-                        "UserspaceTimestampMonotonic",
-                        &error,
-                        't', &t);
+        r = bus_get_property_trivial(c->bus, bus_systemd_mgr, "UserspaceTimestampMonotonic", &error, 't', &t);
         if (r < 0) {
                 log_error_errno(r, "Failed to get timestamp: %s", bus_error_message(&error, r));
                 return 0;