diff --git a/pfosten/app/Http/Controllers/TippsController.php b/pfosten/app/Http/Controllers/TippsController.php
index 033c1cfb..b5887ec0 100755
--- a/pfosten/app/Http/Controllers/TippsController.php
+++ b/pfosten/app/Http/Controllers/TippsController.php
@@ -327,7 +327,7 @@ class TippsController extends Controller
         // Neuerung 2020-01-09: Joker nur speichern, wenn Ergebnis nicht schon zu oft "gejokert" wurde.
         if ($tipp->joker) {
             $jokertipps=Tipp::getJokerUsageArray($user->id,$round_id);
-            $key=score1.":".score2;
+            $key=$score1.":".$score2;
             Log::info("Key(Gamescore):".$key);
             if (array_key_exists($key,$jokertipps)) {
                 //Log::info("Key found in jokertipps array");