diff --git a/hbase-common/src/main/java/org/apache/hadoop/hbase/util/ClassSize.java b/hbase-common/src/main/java/org/apache/hadoop/hbase/util/ClassSize.java
index 82f6e609087..6f88c005cb8 100644
--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/util/ClassSize.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/util/ClassSize.java
@@ -172,7 +172,7 @@ public class ClassSize {
     }
 
     long sizeOfByteArray(int len) {
-      return align(arrayHeaderSize() + len);
+      return align(ARRAY + len);
     }
   }
 
@@ -217,7 +217,7 @@ public class ClassSize {
     @Override
     @SuppressWarnings("static-access")
     long sizeOfByteArray(int len) {
-      return align(arrayHeaderSize() + len * UnsafeAccess.theUnsafe.ARRAY_BYTE_INDEX_SCALE);
+      return align(ARRAY + len * UnsafeAccess.theUnsafe.ARRAY_BYTE_INDEX_SCALE);
     }
   }