twiiter warning use OAuth

[kinejara]

actually im use OAuth to use the api twiiter everithing its ok but i have 1 warning.
i worry
this is my warning
warning: class 'MainViewController' does not implement the 'SA_OAuthTwitterControllerDelegate' protocol

and my implementation its ok...whats wrong?

[kinejara]

newbie error sorry in mi .h im use
@interface MainViewController : UIViewController <FlipsideViewControllerDelegate, SA_OAuthTwitterControllerDelegate >{

and that its all

if i wrong please tell me error
thanks a lot