diff --git a/content/pong/ball/bouncing/motion_engine.md b/content/pong/ball/bouncing/motion_engine.md
index a5cc139..9acab86 100644
--- a/content/pong/ball/bouncing/motion_engine.md
+++ b/content/pong/ball/bouncing/motion_engine.md
@@ -4,7 +4,7 @@ date: 2019-05-28T18:01:49-07:00
 weight: 500
 ---
 
-Before we begin you might want to skim the docs for Bonk. But the short version of what you need to know is that SpatialHash is a structure that lets us do fast, inaccurate checks to quickly eliminate potential collision checks.
+Before we begin you might want to skim the [docs for Bonk](http://moonside.games/docs/bonk/). But the short version of what you need to know is that SpatialHash is a structure that lets us do fast, inaccurate checks to quickly eliminate potential collision checks.
 
 First, we add entities with CollisionComponents to the SpatialHash.