diff --git a/manimlib/mobject/coordinate_systems.py b/manimlib/mobject/coordinate_systems.py
index 1da452ea..e0a605b1 100644
--- a/manimlib/mobject/coordinate_systems.py
+++ b/manimlib/mobject/coordinate_systems.py
@@ -283,7 +283,7 @@ class NumberPlane(Axes):
     }
 
     def __init__(self, **kwargs):
-        super.__init__(**kwargs)
+        super().__init__(**kwargs)
         self.init_background_lines()
 
     def init_background_lines(self):