diff --git a/authentication.py b/authentication.py
index d05c931..74d15b1 100644
--- a/authentication.py
+++ b/authentication.py
@@ -39,9 +39,6 @@ class PasswordTools:
 
     def check(self, username: str, password: str) -> bool:
         user = self.get_by_name(username)
-        if not user:
-            print("Wrong user")
-            return False
         user_pw = user.password_hash
         return argon2.verify(password, user_pw)
 
diff --git a/controllers.py b/controllers.py
index 7f409f3..f52fe3e 100644
--- a/controllers.py
+++ b/controllers.py
@@ -43,12 +43,10 @@ class App:
                 return perm, user_id
             else:
                 self.view.display_co_failed()
-                return None
+                quit()
 
     def start(self):
         team, user_id = self.connect()
-        if not user_id:
-            exit()
         if team == 1:
             CommercialMenu(self.customer_tools,
                            self.contract_tools,