diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 718d92230de7fa3c69973933d50e11b72e8eccee..838e5a4edea396e81eb3ac2d41833e5727462a88 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -995,6 +995,7 @@ void btrfs_free_extra_devids(struct btrfs_fs_devices *fs_devices, int step)
 		if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state)) {
 			list_del_init(&device->dev_alloc_list);
 			clear_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state);
+			fs_devices->rw_devices--;
 		}
 		list_del_init(&device->dev_list);
 		fs_devices->num_devices--;