diff --git a/sql/hive/src/main/scala/org/apache/spark/sql/hive/hiveUdfs.scala b/sql/hive/src/main/scala/org/apache/spark/sql/hive/hiveUdfs.scala
index 4a702d96563d5..6eb08b92497db 100644
--- a/sql/hive/src/main/scala/org/apache/spark/sql/hive/hiveUdfs.scala
+++ b/sql/hive/src/main/scala/org/apache/spark/sql/hive/hiveUdfs.scala
@@ -366,9 +366,8 @@ private[hive] case class HiveUdafFunction(
 
   private val returnInspector = function.init(GenericUDAFEvaluator.Mode.COMPLETE, inspectors)
 
-  // Cast required to avoid type inference selecting a deprecated Hive API.
   private val buffer =
-    function.getNewAggregationBuffer.asInstanceOf[GenericUDAFEvaluator.AbstractAggregationBuffer]
+    function.getNewAggregationBuffer
 
   override def eval(input: Row): Any = unwrap(function.evaluate(buffer), returnInspector)