diff --git a/pulsar-client/src/main/java/org/apache/pulsar/client/impl/ConsumerBuilderImpl.java b/pulsar-client/src/main/java/org/apache/pulsar/client/impl/ConsumerBuilderImpl.java
index dbd8494ac3666..ffc2fe203ba02 100644
--- a/pulsar-client/src/main/java/org/apache/pulsar/client/impl/ConsumerBuilderImpl.java
+++ b/pulsar-client/src/main/java/org/apache/pulsar/client/impl/ConsumerBuilderImpl.java
@@ -449,7 +449,7 @@ public ConsumerBuilder<T> enableBatchIndexAcknowledgment(boolean batchIndexAckno
     @Override
     public ConsumerBuilder<T> expireTimeOfIncompleteChunkedMessage(long duration, TimeUnit unit) {
         conf.setExpireTimeOfIncompleteChunkedMessageMillis(unit.toMillis(duration));
-        return null;
+        return this;
     }
 
 }