diff --git a/lucene/core/src/java/org/apache/lucene/search/ConstantScoreQuery.java b/lucene/core/src/java/org/apache/lucene/search/ConstantScoreQuery.java
index 8b07dcd..17aeabf 100644
--- a/lucene/core/src/java/org/apache/lucene/search/ConstantScoreQuery.java
+++ b/lucene/core/src/java/org/apache/lucene/search/ConstantScoreQuery.java
@@ -24,6 +24,8 @@ import org.apache.lucene.util.Bits;
 import org.apache.lucene.util.ToStringUtils;
 
 import java.io.IOException;
+import java.util.Collection;
+import java.util.Collections;
 import java.util.Set;
 
 /**
@@ -252,6 +254,14 @@ public class ConstantScoreQuery extends Query {
         return super.score(collector, max, firstDocID);
       }
     }
+
+    @Override
+    public Collection<ChildScorer> getChildren() {
+      if (docIdSetIterator instanceof Scorer)
+        return Collections.singletonList(new ChildScorer((Scorer) docIdSetIterator, "constant"));
+      else
+        return Collections.emptyList();
+    }
   }
 
   @Override