diff --git a/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/PersistentTopicTest.java b/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/PersistentTopicTest.java
index 981b1472d4716..45ef58bb7038c 100644
--- a/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/PersistentTopicTest.java
+++ b/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/PersistentTopicTest.java
@@ -496,7 +496,7 @@ public void testProducerOverwrite() {
 
     private void testMaxProducers() {
         PersistentTopic topic = new PersistentTopic(successTopicName, ledgerMock, brokerService);
-        topic.initialize();
+        topic.initialize().join();
         String role = "appid1";
         // 1. add producer1
         Producer producer = new Producer(topic, serverCnx, 1 /* producer id */, "prod-name1", role,
@@ -2251,7 +2251,7 @@ private ByteBuf getMessageWithMetadata(byte[] data) {
     @Test
     public void testGetReplicationClusters() throws MetadataStoreException {
         PersistentTopic topic = new PersistentTopic(successTopicName, ledgerMock, brokerService);
-        topic.initialize();
+        topic.initialize().join();
         assertEquals(topic.getHierarchyTopicPolicies().getReplicationClusters().get(), Collections.emptyList());
 
         Policies policies = new Policies();
@@ -2262,7 +2262,7 @@ public void testGetReplicationClusters() throws MetadataStoreException {
                 .createPolicies(TopicName.get(successTopicName).getNamespaceObject(), policies);
 
         topic = new PersistentTopic(successTopicName, ledgerMock, brokerService);
-        topic.initialize();
+        topic.initialize().join();
         assertEquals(topic.getHierarchyTopicPolicies().getReplicationClusters().get(), namespaceClusters);
 
         TopicPoliciesService topicPoliciesService = mock(TopicPoliciesService.class);
@@ -2277,7 +2277,7 @@ public void testGetReplicationClusters() throws MetadataStoreException {
         when(topicPoliciesService.getTopicPoliciesIfExists(any())).thenReturn(topicPolicies);
 
         topic = new PersistentTopic(successTopicName, ledgerMock, brokerService);
-        topic.initialize();
+        topic.initialize().join();
         assertEquals(topic.getHierarchyTopicPolicies().getReplicationClusters().get(), namespaceClusters);
     }