diff --git a/fs/btrfs/props.c b/fs/btrfs/props.c
index af109c0ba72075f6561a50132f1046a5d22d5c68..e0469816c678be793d13619d465c54646eef268a 100644
--- a/fs/btrfs/props.c
+++ b/fs/btrfs/props.c
@@ -337,7 +337,7 @@ static int inherit_props(struct btrfs_trans_handle *trans,
 	for (i = 0; i < ARRAY_SIZE(prop_handlers); i++) {
 		const struct prop_handler *h = &prop_handlers[i];
 		const char *value;
-		u64 num_bytes;
+		u64 num_bytes = 0;
 
 		if (!h->inheritable)
 			continue;