diff --git a/block/snapshot.c b/block/snapshot.c
index c4d40e80dd..7da0588712 100644
--- a/block/snapshot.c
+++ b/block/snapshot.c
@@ -297,6 +297,7 @@ int bdrv_snapshot_goto(BlockDriverState *bs,
         bdrv_graph_wrunlock(NULL);
 
         ret = bdrv_snapshot_goto(fallback_bs, snapshot_id, errp);
+        memset(bs->opaque, 0, drv->instance_size);
         open_ret = drv->bdrv_open(bs, options, bs->open_flags, &local_err);
         qobject_unref(options);
         if (open_ret < 0) {