diff --git a/src/app/project/game-model/gamesystems/productSystemGenerator/ProductGamesystemGenerator.ts b/src/app/project/game-model/gamesystems/productSystemGenerator/ProductGamesystemGenerator.ts
index 28e894e..55bc89c 100644
--- a/src/app/project/game-model/gamesystems/productSystemGenerator/ProductGamesystemGenerator.ts
+++ b/src/app/project/game-model/gamesystems/productSystemGenerator/ProductGamesystemGenerator.ts
@@ -34,7 +34,11 @@ export class ProductGamesystemGenerator extends AbstractProductGamesystemGenerat
       transition.scriptAccountActions = this.generateCombinedActions(leftTransition.scriptAccountActions, rightTransition.scriptAccountActions);
       transition.scriptAccountConditions = this.generateCombinedConditions(leftTransition.scriptAccountConditions, rightTransition.scriptAccountConditions);
 
-      generatedTransitions.push(transition)
+      if(generatedTransitions.find(generatedTransition => generatedTransition.startingState.equals(startingState) && generatedTransition.endingState.equals(endingState)) == undefined) {
+        generatedTransitions.push(transition)
+      } else {
+        console.log(transition)
+      }
     }
   }
 
diff --git a/src/app/project/game-model/gamesystems/productSystemGenerator/ProductTemplateGamesystemGenerator.ts b/src/app/project/game-model/gamesystems/productSystemGenerator/ProductTemplateGamesystemGenerator.ts
index 058455f..c82e6ac 100644
--- a/src/app/project/game-model/gamesystems/productSystemGenerator/ProductTemplateGamesystemGenerator.ts
+++ b/src/app/project/game-model/gamesystems/productSystemGenerator/ProductTemplateGamesystemGenerator.ts
@@ -141,7 +141,11 @@ export class ProductTemplateGamesystemGenerator<TemplateReference> extends Abstr
 
       transition.scriptAccountConditions = this.generateCombinedConditions(leftConditions, rightConditions);
 
-      generatedTransitions.push(transition)
+      if(generatedTransitions.find(generatedTransition => generatedTransition.startingState.equals(startingState) && generatedTransition.endingState.equals(endingState)) == undefined) {
+        generatedTransitions.push(transition)
+      } else {
+        console.log(transition)
+      }
     }
   }
 
diff --git a/src/app/project/game-model/gamesystems/states/ProductState.ts b/src/app/project/game-model/gamesystems/states/ProductState.ts
index e2ed323..d595dc6 100644
--- a/src/app/project/game-model/gamesystems/states/ProductState.ts
+++ b/src/app/project/game-model/gamesystems/states/ProductState.ts
@@ -2,6 +2,7 @@ import {ProductTransition} from "../transitions/ProductTransition";
 import {State} from "./State";
 import {SimpleState} from "./SimpleState";
 import {Transition} from "../transitions/Transition";
+import {SimpleTemplateState} from "./SimpleTemplateState";
 
 export class ProductState extends State<ProductTransition> {
   innerStates: State<any>[] = [];
@@ -29,6 +30,10 @@ export class ProductState extends State<ProductTransition> {
       return false;
     }
 
+    if(state instanceof SimpleTemplateState) {
+      return false;
+    }
+
     for(let i=0; i<this.innerStates.length; i++) {
       if(!this.innerStates[i].equals((state as ProductState).innerStates[i])) {
         return false;