diff --git a/src/main/java/de/unistuttgart/memorybackend/service/GameResultService.java b/src/main/java/de/unistuttgart/memorybackend/service/GameResultService.java
index 6b6941e..124413a 100644
--- a/src/main/java/de/unistuttgart/memorybackend/service/GameResultService.java
+++ b/src/main/java/de/unistuttgart/memorybackend/service/GameResultService.java
@@ -92,15 +92,15 @@ private int calculateResultScore(final Boolean isCompleted) {
      */
     private int calculateRewards(final int resultScore) {
         if (resultScore == 100 && flagFirstTimeFinished == 0) {
-            flagFirstTimeFinished += 1;
+            flagFirstTimeFinished++;
             return 10;
         } else if (resultScore == 100 && flagFirstTimeFinished == 1) {
-            flagFirstTimeFinished += 1;
+            flagFirstTimeFinished++;
             return 5;
         } else if (resultScore == 100 && flagFirstTimeFinished == 2) {
             return 2;
+        } else {
+            return 0;
         }
-
-        return 0;
     }
 }