diff --git a/pulsar-broker/src/test/java/org/apache/pulsar/client/api/SimpleProducerConsumerTest.java b/pulsar-broker/src/test/java/org/apache/pulsar/client/api/SimpleProducerConsumerTest.java
index a867dc0cd3562..e99abac1ec40f 100644
--- a/pulsar-broker/src/test/java/org/apache/pulsar/client/api/SimpleProducerConsumerTest.java
+++ b/pulsar-broker/src/test/java/org/apache/pulsar/client/api/SimpleProducerConsumerTest.java
@@ -3520,7 +3520,7 @@ public void testMultiTopicsConsumerImplPauseForManualSubscription() throws Excep
             producer3.send(message.getBytes(UTF_8));
         }
 
-        int receiverQueueSize = 1;
+        int receiverQueueSize = 6;
         Consumer<byte[]> consumer = pulsarClient
             .newConsumer()
             .topics(Lists.newArrayList(topicNameBase + "1", topicNameBase + "2"))