diff --git a/fs/btrfs/extent-io-tree.c b/fs/btrfs/extent-io-tree.c
index 3676580c2d97..7b93719a486c 100644
--- a/fs/btrfs/extent-io-tree.c
+++ b/fs/btrfs/extent-io-tree.c
@@ -397,7 +397,7 @@ static int insert_state(struct extent_io_tree *tree,
 			u32 bits, struct extent_changeset *changeset)
 {
 	struct rb_node **node;
-	struct rb_node *parent;
+	struct rb_node *parent = NULL;
 	const u64 end = state->end;
 
 	set_state_bits(tree, state, bits, changeset);