diff --git a/_config.php b/_config.php
deleted file mode 100644
index cb02e07f..00000000
--- a/_config.php
+++ /dev/null
@@ -1,6 +0,0 @@
-<?php
-
-$path = explode(DIRECTORY_SEPARATOR, dirname(__FILE__));
-$dir = $path[count($path) - 1];
-
-define('REPORTS_DIR', $dir);
diff --git a/code/ReportAdmin.php b/code/ReportAdmin.php
index 6aaf9c21..33ae2925 100644
--- a/code/ReportAdmin.php
+++ b/code/ReportAdmin.php
@@ -65,7 +65,7 @@ class ReportAdmin extends LeftAndMain implements PermissionProvider
         // Set custom options for TinyMCE specific to ReportAdmin
         HTMLEditorConfig::get('cms')->setOption('content_css', project() . '/css/editor.css');
 
-        Requirements::javascript(REPORTS_DIR . '/javascript/ReportAdmin.js');
+        Requirements::javascript('silverstripe/reports: javascript/ReportAdmin.js');
     }
 
     /**