diff --git a/src/backend/commands/copy.c b/src/backend/commands/copy.c
index 4eb94a4..b2eab5f 100644
--- a/src/backend/commands/copy.c
+++ b/src/backend/commands/copy.c
@@ -2149,8 +2149,8 @@ CopyFrom(CopyState cstate)
 	 */
 	if ((resultRelInfo->ri_TrigDesc != NULL &&
 		 (resultRelInfo->ri_TrigDesc->trig_insert_before_row ||
-		  resultRelInfo->ri_TrigDesc->trig_insert_instead_row)) ||
-		cstate->volatile_defexprs)
+		  resultRelInfo->ri_TrigDesc->trig_insert_instead_row)))
+//		cstate->volatile_defexprs)
 	{
 		useHeapMultiInsert = false;
 	}