diff --git a/src/Codeception/Module/Yii1.php b/src/Codeception/Module/Yii1.php
index 9d827054aa..194e9824eb 100644
--- a/src/Codeception/Module/Yii1.php
+++ b/src/Codeception/Module/Yii1.php
@@ -247,7 +247,8 @@ public function getInternalDomains()
     {
         $domains = [$this->getDomainRegex(Yii::app()->request->getHostInfo())];
         if (Yii::app()->urlManager->urlFormat === 'path') {
-            $rules = ReflectionHelper::readPrivateProperty(Yii::app()->urlManager, '_rules');
+            $parent = Yii::app()->urlManager instanceof \CUrlManager ? '\CUrlManager' : null;
+            $rules = ReflectionHelper::readPrivateProperty(Yii::app()->urlManager, '_rules', $parent);
             foreach ($rules as $rule) {
                 if ($rule->hasHostInfo === true) {
                     $domains[] = $this->getDomainRegex($rule->template, $rule->params);