diff --git a/src/Magento/FunctionalTestingFramework/Exceptions/Collector/ExceptionCollector.php b/src/Magento/FunctionalTestingFramework/Exceptions/Collector/ExceptionCollector.php
index 4b67add0b..c1e023ef4 100644
--- a/src/Magento/FunctionalTestingFramework/Exceptions/Collector/ExceptionCollector.php
+++ b/src/Magento/FunctionalTestingFramework/Exceptions/Collector/ExceptionCollector.php
@@ -53,7 +53,7 @@ public function throwException()
     private function formatErrors($errors)
     {
         $flattenedErrors = [];
-        foreach ($errors as $key => $errorMsg) {
+        foreach ($errors as $errorMsg) {
             if (is_array($errorMsg)) {
                 $flattenedErrors = array_merge($flattenedErrors, $this->formatErrors($errorMsg));
                 continue;