diff --git a/sql/core/src/main/scala/org/apache/spark/sql/sources/rules.scala b/sql/core/src/main/scala/org/apache/spark/sql/sources/rules.scala
index 1eacdde7413f112eff1c22b8924b03ec2c367588..ab33125b74c17d9319f9ce4a3707a6e6881e274f 100644
--- a/sql/core/src/main/scala/org/apache/spark/sql/sources/rules.scala
+++ b/sql/core/src/main/scala/org/apache/spark/sql/sources/rules.scala
@@ -101,7 +101,6 @@ private[sql] case class PreWriteCheck(catalog: Catalog) extends (LogicalPlan =>
           }
         }
 
-      case logical.InsertIntoTable(LogicalRelation(_: InsertableRelation), _, _, _, _) => // OK
       case logical.InsertIntoTable(LogicalRelation(_: HadoopFsRelation), _, _, _, _) => // OK
       case logical.InsertIntoTable(l: LogicalRelation, _, _, _, _) =>
         // The relation in l is not an InsertableRelation.