diff --git a/src/app/game-model/GameModel.ts b/src/app/game-model/GameModel.ts
index 9e2a514..ac4d355 100644
--- a/src/app/game-model/GameModel.ts
+++ b/src/app/game-model/GameModel.ts
@@ -25,7 +25,10 @@ export class GameModel {
   }
 
   addGamesystem(gamesystem: Gamesystem<any, any>) {
-    this._gamesystems.push(gamesystem);
+    if(this.findGamesystem(gamesystem.componentName) == undefined) {
+      this._gamesystems.push(gamesystem);
+    }
+
   }
 
   removeGamesystem(gamesystem : Gamesystem<any, any>) {