diff --git a/atom/browser/web_contents_preferences.cc b/atom/browser/web_contents_preferences.cc
index 9ad778970c..82f2023329 100644
--- a/atom/browser/web_contents_preferences.cc
+++ b/atom/browser/web_contents_preferences.cc
@@ -163,7 +163,7 @@ void WebContentsPreferences::AppendExtraCommandLineSwitches(
   if (guest_instance_id && !window) {
     auto manager = WebViewManager::GetWebViewManager(web_contents);
     if (manager) {
-      content::WebContents* embedder = manager->GetEmbedder(guest_instance_id);
+      auto embedder = manager->GetEmbedder(guest_instance_id);
       if (embedder)
         window = NativeWindow::FromWebContents(embedder);
     }