diff --git a/lucene/core/src/java/org/apache/lucene/index/DocValuesFieldUpdates.java b/lucene/core/src/java/org/apache/lucene/index/DocValuesFieldUpdates.java
index c514ad0e22e..464a7f2f219 100644
--- a/lucene/core/src/java/org/apache/lucene/index/DocValuesFieldUpdates.java
+++ b/lucene/core/src/java/org/apache/lucene/index/DocValuesFieldUpdates.java
@@ -487,7 +487,7 @@ abstract class DocValuesFieldUpdates implements Accountable {
 
     @Override
     public long ramBytesUsed() {
-      return super.ramBytesUsed() + bitSet.ramBytesUsed();
+      return super.ramBytesUsed() + bitSet.ramBytesUsed() + (hasNoValue == null ? 0 : hasNoValue.ramBytesUsed());
     }
 
     @Override