diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index 7be7aea..a345650 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -157,6 +157,7 @@
 u32		  nlmclnt_grant(const struct sockaddr_in *addr, const struct nlm_lock *);
 void		  nlmclnt_recovery(struct nlm_host *);
 int		  nlmclnt_reclaim(struct nlm_host *, struct file_lock *);
+void		  nlmclnt_next_cookie(struct nlm_cookie *);
 
 /*
  * Host cache