diff --git a/mllib/src/main/scala/org/apache/spark/ml/recommendation/ALS.scala b/mllib/src/main/scala/org/apache/spark/ml/recommendation/ALS.scala
index e61997c5934de..474d4731ec0de 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/recommendation/ALS.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/recommendation/ALS.scala
@@ -130,7 +130,7 @@ class ALSModel private[ml] (
       .join(items, dataset(map(itemCol)) === items("id"), "left")
       .select(outputColumns: _*)
       // TODO: Just use a dataset("*")
-      //.select(dataset("*"), prediction)
+      // .select(dataset("*"), prediction)
   }
 
   override private[ml] def transformSchema(schema: StructType, paramMap: ParamMap): StructType = {