diff --git a/src/dat/gui/GUI.js b/src/dat/gui/GUI.js
index 24dc9da..f3d79e1 100644
--- a/src/dat/gui/GUI.js
+++ b/src/dat/gui/GUI.js
@@ -456,8 +456,6 @@ const GUI = function(pars) {
   }
 };
 
-GUI.CustomController = CustomController;
-
 GUI.toggleHide = function() {
   hide = !hide;
   common.each(hideableGuis, function(gui) {