Request test scope
diff --git a/objective-c/auth_sample/SecondViewController.h b/objective-c/auth_sample/SecondViewController.h
index 06a3ca0..3e5ccf9 100644
--- a/objective-c/auth_sample/SecondViewController.h
+++ b/objective-c/auth_sample/SecondViewController.h
@@ -33,6 +33,7 @@
 
 #import <UIKit/UIKit.h>
 
-@interface SecondViewController : UIViewController
+extern NSString * const kTestScope;
 
+@interface SecondViewController : UIViewController
 @end