From 77159eea2eccdb9cd69f20f1e2f33345adfdf69c Mon Sep 17 00:00:00 2001
From: Bill Xi <86190295+BillyLikesHacking@users.noreply.github.com>
Date: Mon, 1 Nov 2021 10:19:06 +0800
Subject: [PATCH] Update mobject.py

---
 manimlib/mobject/mobject.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/manimlib/mobject/mobject.py b/manimlib/mobject/mobject.py
index 16a4fc5c..8ef3625b 100644
--- a/manimlib/mobject/mobject.py
+++ b/manimlib/mobject/mobject.py
@@ -1597,7 +1597,7 @@ class Group(Mobject):
         self.add(*mobjects)
         
     def __add__(self, other : 'Mobject' or 'Group'):
-        assert(isinstance(other(Mobject))
+        assert(isinstance(other, Mobject))
         return self.add(other)