diff --git a/src/backend/distributed/planner/multi_physical_planner.c b/src/backend/distributed/planner/multi_physical_planner.c
index 6e237b546..cbf69490f 100644
--- a/src/backend/distributed/planner/multi_physical_planner.c
+++ b/src/backend/distributed/planner/multi_physical_planner.c
@@ -4628,7 +4628,8 @@ RowModifyLevelForQuery(Query *query)
 	}
 
 	if (commandType == CMD_UPDATE ||
-		commandType == CMD_DELETE)
+		commandType == CMD_DELETE ||
+		commandType == CMD_MERGE /* PG15+ */)
 	{
 		return ROW_MODIFY_NONCOMMUTATIVE;
 	}