diff --git a/hazelcast/src/test/java/com/hazelcast/nio/tcp/TcpIpConnectionManager_MemoryLeakTest.java b/hazelcast/src/test/java/com/hazelcast/nio/tcp/TcpIpConnectionManager_MemoryLeakTest.java
index 0db7dc02ee95..076d912e3ebb 100644
--- a/hazelcast/src/test/java/com/hazelcast/nio/tcp/TcpIpConnectionManager_MemoryLeakTest.java
+++ b/hazelcast/src/test/java/com/hazelcast/nio/tcp/TcpIpConnectionManager_MemoryLeakTest.java
@@ -54,6 +54,8 @@ public void test() {
         HazelcastInstance hz2 = Hazelcast.newHazelcastInstance();
         hz2.shutdown();
 
+        assertClusterSizeEventually(1, hz1);
+
         assertTrueAllTheTime(new AssertTask() {
             @Override
             public void run() throws Exception {