diff --git a/src/pika_admin.cc b/src/pika_admin.cc
index 57833143ca..1325672b0a 100644
--- a/src/pika_admin.cc
+++ b/src/pika_admin.cc
@@ -121,7 +121,7 @@ void SlaveofCmd::DoInitial() {
     return;
   }
 
-  if ((master_ip_ == "127.0.0.1" || master_ip_ == g_pika_server->host()) && master_port_ == g_pika_server->port()) {
+  if ((pstd::StringToLower(master_ip_) == "localhost" || master_ip_ == "127.0.0.1" || master_ip_ == g_pika_server->host()) && master_port_ == g_pika_server->port()) {
     res_.SetRes(CmdRes::kErrOther, "The master ip:port and the slave ip:port are the same");
     return;
   }
diff --git a/tests/integration/server_test.go b/tests/integration/server_test.go
index e1059a6199..742c3c80cd 100644
--- a/tests/integration/server_test.go
+++ b/tests/integration/server_test.go
@@ -407,16 +407,17 @@ var _ = Describe("Server", func() {
 		//	}, "10s").Should(Equal("OK"))
 		//})
 
-		// todo 待回滚
-		//It("should SlaveOf", func() {
-		//	slaveOf := client.SlaveOf(ctx, "localhost", "8888")
-		//	Expect(slaveOf.Err()).NotTo(HaveOccurred())
-		//	Expect(slaveOf.Val()).To(Equal("OK"))
-		//
-		//	slaveOf = client.SlaveOf(ctx, "NO", "ONE")
-		//	Expect(slaveOf.Err()).NotTo(HaveOccurred())
-		//	Expect(slaveOf.Val()).To(Equal("OK"))
-		//})
+		// fix: https://github.com/OpenAtomFoundation/pika/issues/2168
+		It("should SlaveOf itself", func() {
+			slaveOf := client.SlaveOf(ctx, "127.0.0.1", "9221")
+			Expect(slaveOf.Err()).To(MatchError("ERR The master ip:port and the slave ip:port are the same"))
+
+			slaveOf = client.SlaveOf(ctx, "localhost", "9221")
+			Expect(slaveOf.Err()).To(MatchError("ERR The master ip:port and the slave ip:port are the same"))
+
+			slaveOf = client.SlaveOf(ctx, "loCalHoSt", "9221")
+			Expect(slaveOf.Err()).To(MatchError("ERR The master ip:port and the slave ip:port are the same"))
+		})
 
 		It("should Time", func() {
 			tm, err := client.Time(ctx).Result()