diff --git a/static/scripts/materials.js b/static/scripts/materials.js
index 83b7bb6..12fe02a 100644
--- a/static/scripts/materials.js
+++ b/static/scripts/materials.js
@@ -5,6 +5,7 @@ var curveProperties = {
     curvature: 20
 };
 
+// Is called on boot
 materials.prepare = function() {
     var ballSprite = new THREE.Texture(document.getElementById("ball"));
     ballSprite.needsUpdate = true;