diff --git a/cluster/images/etcd/migrate/rollback_v2.go b/cluster/images/etcd/migrate/rollback_v2.go
index 1b4655770fc..34d9eb817f2 100644
--- a/cluster/images/etcd/migrate/rollback_v2.go
+++ b/cluster/images/etcd/migrate/rollback_v2.go
@@ -185,9 +185,7 @@ func traverseMetadata(head *store.NodeExtern, handleFunc func(*store.NodeExtern)
 
 		handleFunc(n)
 
-		for _, next := range n.Nodes {
-			q = append(q, next)
-		}
+		q = append(q, n.Nodes...)
 	}
 }