diff --git a/src/Foundation.hs b/src/Foundation.hs
index ecc31caf4..259e36048 100644
--- a/src/Foundation.hs
+++ b/src/Foundation.hs
@@ -237,18 +237,18 @@ instance YesodAuth UniWorX where
     redirectToReferer _ = True
 
     authenticate Creds{..} = runDB $ do
-        let auth
+        let (plugin, ident)
               | credsPlugin == "dummy"
-              , [ dummyPlugin, dummyIdent] <- Text.splitOn ":" credsIdent
-              = UniqueAuthentication dummyPlugin dummyIdent
+              , [dummyPlugin, dummyIdent] <- Text.splitOn ":" credsIdent
+              = (dummyPlugin, dummyIdent)
               | otherwise
-              = UniqueAuthentication credsPlugin credsIdent
-        x <- getBy auth
+              = (credsPlugin, credsIdent)
+        x <- getBy $ UniqueAuthentication plugin ident
         case x of
             Just (Entity uid _) -> return $ Authenticated uid
             Nothing -> Authenticated <$> insert User
-                { userPlugin = credsPlugin
-                , userIdent = credsIdent
+                { userPlugin = plugin
+                , userIdent = ident
                 , userMatrikelnummer = "DummyMatrikel"
                 }