diff --git a/TODO.md b/TODO.md
index 67c918d..61a591f 100644
--- a/TODO.md
+++ b/TODO.md
@@ -2,7 +2,7 @@
 
 - code cleanup
 - apply a subtle glow effect to the rings, refer: [http://kadekeith.me/stuff/three/glow/](http://kadekeith.me/stuff/three/glow/)
-- add sound effects. 
+- add sound effects.
   - sounds for ring animations (sample from movie)
     - they possibly overlap?
     - there is a pattern, one is slightly stronger than the other, eg: "bom, boom, bom, boom"