diff --git a/include/linux/eventfd.h b/include/linux/eventfd.h
index ff0b981f078e..c5a383162c0b 100644
--- a/include/linux/eventfd.h
+++ b/include/linux/eventfd.h
@@ -56,7 +56,7 @@ static inline struct eventfd_ctx *eventfd_ctx_fdget(int fd)
 	return ERR_PTR(-ENOSYS);
 }
 
-static inline int eventfd_signal(struct eventfd_ctx *ctx, int n)
+static inline int eventfd_signal(struct eventfd_ctx *ctx, __u64 n)
 {
 	return -ENOSYS;
 }