diff --git a/brightray/browser/default_web_contents_delegate.h b/brightray/browser/default_web_contents_delegate.h
index 8ec70c316b6d..c6ce2ee23ff1 100644
--- a/brightray/browser/default_web_contents_delegate.h
+++ b/brightray/browser/default_web_contents_delegate.h
@@ -13,7 +13,9 @@ public:
   ~DefaultWebContentsDelegate();
 
 protected:
+#if defined(OS_MACOSX)
   virtual void HandleKeyboardEvent(content::WebContents*, const content::NativeWebKeyboardEvent&) OVERRIDE;
+#endif
 };
 
 }