diff --git a/fs/btrfs/extent-io-tree.c b/fs/btrfs/extent-io-tree.c
index 82ca6a11e11a..9ae9cd1e7035 100644
--- a/fs/btrfs/extent-io-tree.c
+++ b/fs/btrfs/extent-io-tree.c
@@ -1425,7 +1425,7 @@ void find_first_clear_extent_bit(struct extent_io_tree *tree, u64 start,
 				 u64 *start_ret, u64 *end_ret, u32 bits)
 {
 	struct extent_state *state;
-	struct extent_state *prev = NULL, *next;
+	struct extent_state *prev = NULL, *next = NULL;
 
 	spin_lock(&tree->lock);