diff --git a/fs/namespace.c b/fs/namespace.c
index 6fbc9126367a..746e3fd1f430 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1625,7 +1625,7 @@ void __detach_mounts(struct dentry *dentry)
 	namespace_lock();
 	lock_mount_hash();
 	mp = lookup_mountpoint(dentry);
-	if (IS_ERR_OR_NULL(mp))
+	if (!mp)
 		goto out_unlock;
 
 	event++;