diff --git a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/TournamentDecorator.java b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/TournamentDecorator.java
index ddc4873..ec75d5b 100644
--- a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/TournamentDecorator.java
+++ b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/TournamentDecorator.java
@@ -27,7 +27,7 @@ public class TournamentDecorator implements IsObservable{
                 }
             }
         });
-        executorService = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
+        executorService = Executors.newFixedThreadPool(1);
     }
 
     public void setFactoryDecorator(FactoryDecorator factoryDecorator) {