diff --git a/block/blk-mq.h b/block/blk-mq.h
index c696515766c7..c1458d9502f1 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -99,7 +99,7 @@ static inline struct blk_mq_hw_ctx *blk_mq_map_queue_type(struct request_queue *
  * blk_mq_map_queue() - map (cmd_flags,type) to hardware queue
  * @q: request queue
  * @flags: request command flags
- * @cpu: cpu ctx
+ * @ctx: software queue cpu ctx
  */
 static inline struct blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *q,
 						     unsigned int flags,