diff --git a/gluten-core/src/main/scala/io/glutenproject/extension/columnar/TransformHintRule.scala b/gluten-core/src/main/scala/io/glutenproject/extension/columnar/TransformHintRule.scala
index 1431af2dda34d..d76b64349d70f 100644
--- a/gluten-core/src/main/scala/io/glutenproject/extension/columnar/TransformHintRule.scala
+++ b/gluten-core/src/main/scala/io/glutenproject/extension/columnar/TransformHintRule.scala
@@ -191,7 +191,6 @@ case class FallbackMultiCodegens(session: SparkSession) extends Rule[SparkPlan]
       case p: ShuffledHashJoinExec =>
         tagNotTransformable(p.withNewChildren(p.children.map(tagNotTransformableRecursive)))
       case p if !supportCodegen(p) =>
-        // insert row guard them recursively
         p.withNewChildren(p.children.map(tagNotTransformableForMultiCodegens))
       case p if isAQEShuffleReadExec(p) =>
         p.withNewChildren(p.children.map(tagNotTransformableForMultiCodegens))