1 files changed, 1 insertions, 1 deletions
diff --git a/mkfs.c b/mkfs.c
index 5f8d8b5a..8b653593 100644
--- a/mkfs.c
+++ b/mkfs.c
@@ -381,7 +381,7 @@ static struct option long_options[] = {
 	{ "rootdir", 1, NULL, 'r' },
 	{ "nodiscard", 0, NULL, 'K' },
 	{ "features", 0, NULL, 'O' },
-	{ 0, 0, 0, 0}
+	{ NULL, 0, NULL, 0}
 };
 
 static int add_directory_items(struct btrfs_trans_handle *trans,