diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/coders/StatelessJavaSerializer.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/coders/StatelessJavaSerializer.java
index 068472d7bfff..42102af940ec 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/coders/StatelessJavaSerializer.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/coders/StatelessJavaSerializer.java
@@ -59,8 +59,8 @@ class StatelessJavaSerializer extends Serializer {
   // with this particular signature spares exploring further ones, which involves
   // NoSuchMethodException(s) being thrown as part of the exploration process and may slow
   // things down, see Kryo#newSerializer()
-  public StatelessJavaSerializer(final Kryo ignore1, final Class<?> ignore2) {
-  }
+  // https://github.com/EsotericSoftware/kryo/blob/kryo-2.21.x/src/com/esotericsoftware/kryo/Kryo.java#L319
+  public StatelessJavaSerializer(final Kryo ignore1, final Class<?> ignore2) {}
 
   public StatelessJavaSerializer() {
     this(null, null);