diff --git a/lib/internal/Magento/Framework/Code/Generator.php b/lib/internal/Magento/Framework/Code/Generator.php
index 02cb70b15004f..afffbcd76fe1f 100644
--- a/lib/internal/Magento/Framework/Code/Generator.php
+++ b/lib/internal/Magento/Framework/Code/Generator.php
@@ -112,7 +112,7 @@ public function generateClass($className)
             $this->tryToLoadSourceClass($className, $generator);
             if (!($file = $generator->generate())) {
                 $errors = $generator->getErrors();
-                throw new \RuntimeException(implode(' ', $errors));
+                throw new \RuntimeException(implode(' ', $errors) . ' in [' . $className . ']');
             }
             if (!$this->definedClasses->isClassLoadableFromMemory($className)) {
                 $this->_ioObject->includeFile($file);