diff --git a/lucene/core/src/java/org/apache/lucene/search/Multiset.java b/lucene/core/src/java/org/apache/lucene/search/Multiset.java
index ff346512eff..5fbb3b38486 100644
--- a/lucene/core/src/java/org/apache/lucene/search/Multiset.java
+++ b/lucene/core/src/java/org/apache/lucene/search/Multiset.java
@@ -87,6 +87,7 @@ final class Multiset<T> extends AbstractCollection<T> {
   }
 
   @Override
+  @SuppressWarnings("unchecked")
   public boolean remove(Object o) {
     final Integer count = map.get(o);
     if (count == null) {