diff --git a/etcd3/aio_client.py b/etcd3/aio_client.py
index f7c7424..2e2c558 100644
--- a/etcd3/aio_client.py
+++ b/etcd3/aio_client.py
@@ -80,7 +80,7 @@ async def __aenter__(self):
     async def __aexit__(self, exc_type, exc_val, exc_tb):
         self.close()
 
-    async def __aiter__(self):
+    def __aiter__(self):
         return self
 
     async def __anext__(self):
@@ -118,7 +118,7 @@ def __init__(self, resp):
         self.left_chunk = b''
         self.i = 0
 
-    async def __aiter__(self):
+    def __aiter__(self):
         return self
 
     async def next(self):
diff --git a/etcd3/stateful/watch.py b/etcd3/stateful/watch.py
index 3441891..e34b33b 100644
--- a/etcd3/stateful/watch.py
+++ b/etcd3/stateful/watch.py
@@ -392,4 +392,4 @@ def __iter__(self):
                     # self.watching = False # no need the stop() always called in a with context
                     self.stop()
                     raise
-            time.sleep(0.3)
+            time.sleep(0.2)
diff --git a/tests/test_watch_util.py b/tests/test_watch_util.py
index a697b29..9103d93 100644
--- a/tests/test_watch_util.py
+++ b/tests/test_watch_util.py
@@ -126,7 +126,7 @@ def test_watcher_retry(client):
     w.runDaemon()
     times = MAX_RETRIES + 1
     while times:
-        time.sleep(0.2)
+        time.sleep(0.5)
         if not w._resp.raw.closed:  # directly close the tcp connection
             s = socket.fromfd(w._resp.raw._fp.fileno(), socket.AF_INET, socket.SOCK_STREAM)
             s.shutdown(socket.SHUT_RDWR)
@@ -184,6 +184,7 @@ def test_watcher_rewatch_on_compaction(client):
             for i in range(10):  # these event will be compacted
                 etcdctl('put foo %s' % i)
             etcdctl('put foo bare')  # will receive this event when re-watch
-            etcdctl("compaction --physical %s" % client.hash().header.revision)
+            client.compact(client.hash().header.revision, True)
+            # etcdctl("compaction --physical %s" % client.hash().header.revision)
             times -= 1
             w._kill_response_stream()  # trigger a re-watch