diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index 12811091fd50..0bb79d858a13 100644
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -375,7 +375,7 @@ static inline struct blkcg_gq *__blkg_lookup(struct blkcg *blkcg,
  * @q: request_queue of interest
  *
  * Lookup blkg for the @blkcg - @q pair.  This function should be called
- * under RCU read loc.
+ * under RCU read lock.
  */
 static inline struct blkcg_gq *blkg_lookup(struct blkcg *blkcg,
 					   struct request_queue *q)