diff --git a/manimlib/mobject/mobject.py b/manimlib/mobject/mobject.py
index 9fa6ebee..caf34361 100644
--- a/manimlib/mobject/mobject.py
+++ b/manimlib/mobject/mobject.py
@@ -821,7 +821,7 @@ class Mobject(object):
     def is_changing(self) -> bool:
         return self._is_animating or self.has_updaters
 
-    def set_animating_status(self, is_animating: bool, recurse: bool = True) -> None:
+    def set_animating_status(self, is_animating: bool, recurse: bool = True):
         for mob in (*self.get_family(recurse), *self.get_ancestors(extended=True)):
             mob._is_animating = is_animating
         return self