diff --git a/types/passport-facebook/index.d.ts b/types/passport-facebook/index.d.ts
index 89ce91b093..726a72228b 100644
--- a/types/passport-facebook/index.d.ts
+++ b/types/passport-facebook/index.d.ts
@@ -47,7 +47,7 @@ export type VerifyFunction =
 export type VerifyFunctionWithRequest =
     (req: express.Request, accessToken: string, refreshToken: string, profile: Profile, done: (error: any, user?: any, info?: any) => void) => void;
 
-export class Strategy extends passport.Strategy {
+export class Strategy implements passport.Strategy {
     constructor(options: StrategyOptionWithRequest, verify: VerifyFunctionWithRequest);
     constructor(options: StrategyOption, verify: VerifyFunction);