diff --git a/lucene/core/src/java/org/apache/lucene/search/TermInSetQuery.java b/lucene/core/src/java/org/apache/lucene/search/TermInSetQuery.java
index 08fe3c3a485f..49623c0bbe94 100644
--- a/lucene/core/src/java/org/apache/lucene/search/TermInSetQuery.java
+++ b/lucene/core/src/java/org/apache/lucene/search/TermInSetQuery.java
@@ -146,6 +146,10 @@ public PrefixCodedTerms getTermData() {
     return termData;
   }
 
+  public String getField() {
+    return field;
+  }
+
   @Override
   public String toString(String defaultField) {
     StringBuilder builder = new StringBuilder();