diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index b517ef1477ea..3cbca2fb1e23 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -1496,6 +1496,7 @@ int btrfs_check_shared(struct btrfs_root *root, u64 inum, u64 bytenr)
 		if (!node)
 			break;
 		bytenr = node->val;
+		shared.share_count = 0;
 		cond_resched();
 	}