diff --git a/code/controllers/CMSMain.php b/code/controllers/CMSMain.php
index fca58bbf..62db4d63 100644
--- a/code/controllers/CMSMain.php
+++ b/code/controllers/CMSMain.php
@@ -69,7 +69,7 @@ class CMSMain extends LeftAndMain implements CurrentPageIdentifier, PermissionPr
 					CMS_DIR . '/javascript/CMSMain.EditForm.js',
 					CMS_DIR . '/javascript/CMSMain.AddForm.js',
 					CMS_DIR . '/javascript/CMSPageHistoryController.js',
-					CMS_DIR . '/javascript/CMSPagesController.Tree.js',
+					// CMS_DIR . '/javascript/CMSPagesController.Tree.js',
 					CMS_DIR . '/javascript/SilverStripeNavigator.js'
 				),
 				Requirements::add_i18n_javascript(CMS_DIR . '/javascript/lang', true, true)