diff --git a/lib/internal/Magento/Framework/App/Utility/Files.php b/lib/internal/Magento/Framework/App/Utility/Files.php
index fd4ccf4bd1b40..ce8722ab8b5bb 100644
--- a/lib/internal/Magento/Framework/App/Utility/Files.php
+++ b/lib/internal/Magento/Framework/App/Utility/Files.php
@@ -1391,7 +1391,8 @@ private function classFileExistsCheckContent($fullPath, $namespace, $className)
             $fileContent = file_get_contents($fullPath);
             if (strpos($fileContent, 'namespace ' . $namespace) !== false
                 && (strpos($fileContent, 'class ' . $className) !== false
-                    || strpos($fileContent, 'interface ' . $className) !== false)
+                    || strpos($fileContent, 'interface ' . $className) !== false
+                    || strpos($fileContent, 'trait ' . $className) !== false)
             ) {
                 return true;
             }