diff --git a/atom/browser/ui/webui/pdf_viewer_handler.cc b/atom/browser/ui/webui/pdf_viewer_handler.cc
index 70fa995d889..37b18de39e2 100644
--- a/atom/browser/ui/webui/pdf_viewer_handler.cc
+++ b/atom/browser/ui/webui/pdf_viewer_handler.cc
@@ -132,7 +132,7 @@ void PdfViewerHandler::GetStrings(const base::ListValue* args) {
   CHECK(args->Get(0, &callback_id));
 
   std::unique_ptr<base::DictionaryValue> result(new base::DictionaryValue);
-  // TODO(deepak1556): Generate strings from componenets/pdf_strings.grdp.
+// TODO(deepak1556): Generate strings from components/pdf_strings.grdp.
 #define SET_STRING(id, resource) result->SetString(id, resource)
   SET_STRING("passwordPrompt",
              "This document is password protected.  Please enter a password.");
diff --git a/atom/browser/ui/webui/pdf_viewer_ui.cc b/atom/browser/ui/webui/pdf_viewer_ui.cc
index 2d031872974..0c642a28ee7 100644
--- a/atom/browser/ui/webui/pdf_viewer_ui.cc
+++ b/atom/browser/ui/webui/pdf_viewer_ui.cc
@@ -48,7 +48,7 @@ class BundledDataSource : public content::URLDataSource {
                         int render_frame_id,
                         const GotDataCallback& callback) override {
     std::string filename = PathWithoutParams(path);
-    std::map<base::FilePath, int>::const_iterator entry =
+    auto entry =
         path_to_resource_id_.find(base::FilePath::FromUTF8Unsafe(filename));
 
     if (entry != path_to_resource_id_.end()) {