diff --git a/bookkeeper-server/src/main/java/org/apache/bookkeeper/proto/checksum/DigestManager.java b/bookkeeper-server/src/main/java/org/apache/bookkeeper/proto/checksum/DigestManager.java
index 9f931f731a2..eab33945b1e 100644
--- a/bookkeeper-server/src/main/java/org/apache/bookkeeper/proto/checksum/DigestManager.java
+++ b/bookkeeper-server/src/main/java/org/apache/bookkeeper/proto/checksum/DigestManager.java
@@ -159,7 +159,7 @@ private ReferenceCounted computeDigestAndPackageForSendingV2(long entryId, long
         buf.readerIndex(0);
 
         if (isSmallEntry) {
-            buf.writeBytes(unwrapped);
+            buf.writeBytes(unwrapped, unwrapped.readerIndex(), unwrapped.readableBytes());
             unwrapped.release();
             return buf;
         } else {