diff --git a/manimlib/constants.py b/manimlib/constants.py
index e00813b6..c4bac9cb 100644
--- a/manimlib/constants.py
+++ b/manimlib/constants.py
@@ -151,6 +151,7 @@ DEFAULT_FRAME_RATE = 60
 
 DEFAULT_STROKE_WIDTH = 4
 ANTI_ALIAS_WIDTH = 0.0075
+ANTI_ALIAS_WIDTH_OVER_FRAME_HEIGHT = 0.001
 
 FRAME_HEIGHT = 8.0
 FRAME_WIDTH = FRAME_HEIGHT * DEFAULT_PIXEL_WIDTH / DEFAULT_PIXEL_HEIGHT