diff --git a/FightSystem/FightSystem_Core/src/de/steamwar/fightsystem/FightSystem.java b/FightSystem/FightSystem_Core/src/de/steamwar/fightsystem/FightSystem.java
index 5da7c23a..e6238387 100644
--- a/FightSystem/FightSystem_Core/src/de/steamwar/fightsystem/FightSystem.java
+++ b/FightSystem/FightSystem_Core/src/de/steamwar/fightsystem/FightSystem.java
@@ -85,7 +85,7 @@ public class FightSystem extends JavaPlugin {
 
         String arenaMap = System.getProperty("arenaMap");
         if (arenaMap != null) {
-            WorldIdentifier.set("fight/" + HexFormat.of().formatHex(arenaMap.getBytes(StandardCharsets.UTF_8)));
+            WorldIdentifier.set("fight/" + Core.getVersion() + "/" + arenaMap);
         }
 
         message = new Message("de.steamwar.fightsystem.FightSystem", FightSystem.class.getClassLoader());