diff --git a/fs/bio.c b/fs/bio.c
index bbc442b..1f3bb50 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -411,6 +411,7 @@
 
 /**
  *	bio_add_pc_page	-	attempt to add page to bio
+ *	@q: the target queue
  *	@bio: destination bio
  *	@page: page to add
  *	@len: vec entry length