diff --git a/atom/browser/common_web_contents_delegate.cc b/atom/browser/common_web_contents_delegate.cc
index 59ffc7dcbc0..f7f9e46250e 100644
--- a/atom/browser/common_web_contents_delegate.cc
+++ b/atom/browser/common_web_contents_delegate.cc
@@ -338,7 +338,7 @@ void CommonWebContentsDelegate::DevToolsRequestFileSystems() {
   }
 
   std::vector<FileSystem> file_systems;
-  for (auto file_system_path : file_system_paths) {
+  for (const auto& file_system_path : file_system_paths) {
     base::FilePath path = base::FilePath::FromUTF8Unsafe(file_system_path);
     std::string file_system_id = RegisterFileSystem(GetDevToolsWebContents(),
                                                     path);