diff --git a/lucene/classification/src/java/org/apache/lucene/classification/KNearestNeighborClassifier.java b/lucene/classification/src/java/org/apache/lucene/classification/KNearestNeighborClassifier.java
index faa94a26801..7cc5a8dd5f4 100644
--- a/lucene/classification/src/java/org/apache/lucene/classification/KNearestNeighborClassifier.java
+++ b/lucene/classification/src/java/org/apache/lucene/classification/KNearestNeighborClassifier.java
@@ -77,7 +77,7 @@ public class KNearestNeighborClassifier implements Classifier {
         assignedClass = cl;
       }
     }
-    double score = classCounts.get(assignedClass) / k;
+    double score = max / k;
     return new ClassificationResult(assignedClass, score);
   }