diff --git a/CRM/Utils/System/Drupal.php b/CRM/Utils/System/Drupal.php
index 1c9d8b288057..b9c99989e761 100644
--- a/CRM/Utils/System/Drupal.php
+++ b/CRM/Utils/System/Drupal.php
@@ -590,6 +590,12 @@ public function cmsRootPath($scriptFilename = NULL) {
       // drush anyway takes care of multisite install etc
       return drush_get_context('DRUSH_DRUPAL_ROOT');
     }
+
+    global $civicrm_paths;
+    if (!empty($civicrm_paths['cms.root']['path'])) {
+      return $civicrm_paths['cms.root']['path'];
+    }
+
     // CRM-7582
     $pathVars = explode('/',
       str_replace('//', '/',