diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index f7f4ac01589bcc02953ab68b5dca73c2cce9a932..4a5248097d7aae5a5c1a87cc506fd3baa68ffec1 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -995,7 +995,6 @@ static noinline int cow_file_range(struct btrfs_inode *inode,
 	int ret = 0;
 
 	if (btrfs_is_free_space_inode(inode)) {
-		WARN_ON_ONCE(1);
 		ret = -EINVAL;
 		goto out_unlock;
 	}