diff --git a/pulsar-client/src/main/java/org/apache/pulsar/client/impl/UnAckedMessageTracker.java b/pulsar-client/src/main/java/org/apache/pulsar/client/impl/UnAckedMessageTracker.java
index aa576b5d058b3ebb248a98b933c79c002672a5b3..43065d252c0bd09a8ce52ee24bf14850bee1c522 100644
--- a/pulsar-client/src/main/java/org/apache/pulsar/client/impl/UnAckedMessageTracker.java
+++ b/pulsar-client/src/main/java/org/apache/pulsar/client/impl/UnAckedMessageTracker.java
@@ -129,7 +129,7 @@ public class UnAckedMessageTracker implements Closeable {
                 try {
                     ConcurrentOpenHashSet<MessageId> headPartition = timePartitions.removeFirst();
                     if (!headPartition.isEmpty()) {
-                        log.warn("[{}] {} messages have timed-out", consumerBase, timePartitions.size());
+                        log.warn("[{}] {} messages have timed-out", consumerBase, headPartition.size());
                         headPartition.forEach(messageId -> {
                             messageIds.add(messageId);
                             messageIdPartitionMap.remove(messageId);