diff --git a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Tournament.java b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Tournament.java
index a40585a..b4097d5 100644
--- a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Tournament.java
+++ b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Tournament.java
@@ -7,6 +7,7 @@ import java.io.File;
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Iterator;
 import java.util.List;
 
 public class Tournament implements Serializable {
@@ -31,11 +32,7 @@ public class Tournament implements Serializable {
     }
 
     public void addParticipant(Participant newParticipant) throws ParticipantExistsException {
-        for(Participant participant : participants){
-            if(participant.equals(newParticipant)){
-                participants.remove(participant);
-            }
-        }
+        participants.removeIf(participant -> participant.equals(newParticipant));
         participants.add(newParticipant);
     }
 
@@ -53,11 +50,7 @@ public class Tournament implements Serializable {
     }
 
     public void addPlace(Place newPlace) throws PlaceExistsException {
-        for(Place place : places){
-            if(place.equals(newPlace)){
-                places.remove(place);
-            }
-        }
+        places.removeIf(place -> place.equals(newPlace));
         places.add(newPlace);
     }