diff --git a/mllib/src/main/scala/org/apache/spark/ml/feature/ChiSqSelector.scala b/mllib/src/main/scala/org/apache/spark/ml/feature/ChiSqSelector.scala
index 1c329267d70d..33723287b055 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/feature/ChiSqSelector.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/feature/ChiSqSelector.scala
@@ -142,6 +142,7 @@ final class ChiSqSelectorModel private[ml] (
 
   /** @group setParam */
   @Since("1.6.0")
+  @deprecated("labelCol is not used by ChiSqSelectorModel.", "2.0.0")
   def setLabelCol(value: String): this.type = set(labelCol, value)
 
   @Since("2.0.0")