diff --git a/block/elevator.c b/block/elevator.c
index 6df2b50..0abce47 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -1097,7 +1097,7 @@
 	struct elevator_type *__e;
 	int len = 0;
 
-	if (!q->elevator)
+	if (!q->elevator || !blk_queue_stackable(q))
 		return sprintf(name, "none\n");
 
 	elv = e->elevator_type;