diff --git a/factories/EventFactory.py b/factories/EventFactory.py
index 1314015..3217162 100644
--- a/factories/EventFactory.py
+++ b/factories/EventFactory.py
@@ -50,7 +50,7 @@ class EventFactory:
         return event
 
     def createEnterUpperPlayfieldEvent(self):
-        event = EnterUpperPlayfieldEvent(self.currentPlayer, self.upperPlayfieldFlippers)
+        event = EnterUpperPlayfieldEvent(self.currentPlayer)
         self.__registerEventToTarget(event, self.targets['UpperPlayfieldRollUnder'])
         return event