diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 0c8690d9f6cd0e0d07a80db4eeb84c3fd7c8437e..ca6f0ceba09b762703aa87a7347b80c9cf6356e7 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -1865,7 +1865,7 @@ void blk_trace_remove_sysfs(struct device *dev)
 
 /**
  * blk_fill_rwbs - Fill the buffer rwbs by mapping op to character string.
- * @rwbs	buffer to be filled
+ * @rwbs:	buffer to be filled
  * @op:		REQ_OP_XXX for the tracepoint
  *
  * Description: