diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c
index 0d1565d71231..d4ab8e185ef2 100644
--- a/fs/btrfs/reada.c
+++ b/fs/btrfs/reada.c
@@ -456,6 +456,8 @@ static struct reada_extent *reada_find_extent(struct btrfs_root *root,
 		}
 		have_zone = 1;
 	}
+	if (!have_zone)
+		radix_tree_delete(&fs_info->reada_tree, index);
 	spin_unlock(&fs_info->reada_lock);
 	btrfs_dev_replace_unlock(&fs_info->dev_replace, 0);