diff --git a/src/main/java/de/hs_mannheim/domain/System.java b/src/main/java/de/hs_mannheim/domain/System.java
index 9b843e0..0a453e0 100644
--- a/src/main/java/de/hs_mannheim/domain/System.java
+++ b/src/main/java/de/hs_mannheim/domain/System.java
@@ -1,8 +1,6 @@
 package de.hs_mannheim.domain;
 
-import java.io.IOException;
 import java.net.URI;
-import java.net.URISyntaxException;
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
@@ -17,11 +15,7 @@ public class System {
     private User current_user;
     private String api_key;
 
-    public String getApi_key() {
-        return api_key;
-    }
-
-    public void setApi_key(String api_key) {
+    public System(String api_key) {
         this.api_key = api_key;
     }
 
diff --git a/src/main/java/de/hs_mannheim/facade/Application.java b/src/main/java/de/hs_mannheim/facade/Application.java
index b98778f..14d3c20 100644
--- a/src/main/java/de/hs_mannheim/facade/Application.java
+++ b/src/main/java/de/hs_mannheim/facade/Application.java
@@ -8,8 +8,8 @@ public class Application {
     
     private System running_system;
 
-    public Application(){
-        this.running_system = new System();
+    public Application(String api_key){
+        this.running_system = new System(api_key);
     }
 
     public boolean sign_in_user(String username, String password){