diff --git a/fs/inotify_user.c b/fs/inotify_user.c
index dc7e1f6..fe79c25d 100644
--- a/fs/inotify_user.c
+++ b/fs/inotify_user.c
@@ -574,6 +574,10 @@
 	struct file *filp;
 	int fd, ret;
 
+	/* Check the IN_* constants for consistency.  */
+	BUILD_BUG_ON(IN_CLOEXEC != O_CLOEXEC);
+	BUILD_BUG_ON(IN_NONBLOCK != O_NONBLOCK);
+
 	if (flags & ~(IN_CLOEXEC | IN_NONBLOCK))
 		return -EINVAL;