diff --git a/connexion/apis/abstract.py b/connexion/apis/abstract.py
index cfb457ee5..5d121176d 100644
--- a/connexion/apis/abstract.py
+++ b/connexion/apis/abstract.py
@@ -160,7 +160,7 @@ def add_swagger_ui(self):
         """"""
 
     @abc.abstractmethod
-    def add_auth_on_not_found(self):
+    def add_auth_on_not_found(self, security, security_definitions):
         """"""
 
     def add_operation(self, method, path, swagger_operation, path_parameters):
diff --git a/examples/restyresolver/resty.py b/examples/restyresolver/resty.py
index 14a082de5..ae0237b05 100755
--- a/examples/restyresolver/resty.py
+++ b/examples/restyresolver/resty.py
@@ -8,6 +8,7 @@
 
 if __name__ == '__main__':
     app = connexion.FlaskApp(__name__)
-    app.add_api('resty-api.yaml', 
-                arguments={'title': 'RestyResolver Example'}, resolver=RestyResolver('api'))
+    app.add_api('resty-api.yaml',
+                arguments={'title': 'RestyResolver Example'},
+                resolver=RestyResolver('api'))
     app.run(port=9090)