diff --git a/sources/src/main/java/pr2/generics/einfach/Liste.java b/sources/src/main/java/pr2/generics/einfach/Liste.java
index b4be384..86b395d 100644
--- a/sources/src/main/java/pr2/generics/einfach/Liste.java
+++ b/sources/src/main/java/pr2/generics/einfach/Liste.java
@@ -8,7 +8,7 @@ package pr2.generics.einfach;
 /**
  * Eine einfache, verkettete Liste.
  */
-public class Liste {
+public class Liste<E> {
 
     /** Referenz auf den ersten Knoten. */
     private ListeNode first;
@@ -31,7 +31,7 @@ public class Liste {
             current = nextNode;
         }
         else {
-            current.next = nextNode;
+            current.setNext(nextNode);
             current = nextNode;
         }
     }
@@ -47,7 +47,7 @@ public class Liste {
         ListeNode node = first;
 
         while ((node != null) && (count < index)) {
-            node = node.next;
+            node = node.getNext();
             count++;
         }
 
@@ -78,7 +78,7 @@ public class Liste {
         ListeNode node = first;
 
         while (node != null) {
-            node = node.next;
+            node = node.getNext();
             count++;
         }
 
diff --git a/sources/src/main/java/pr2/generics/einfach/ListeNode.java b/sources/src/main/java/pr2/generics/einfach/ListeNode.java
index bb1d1ca..0336f11 100644
--- a/sources/src/main/java/pr2/generics/einfach/ListeNode.java
+++ b/sources/src/main/java/pr2/generics/einfach/ListeNode.java
@@ -10,7 +10,6 @@ class ListeNode {
 
     /** Referenz auf den nächsten Knoten. */
     ListeNode next;
-
     /**
      * Legt einen neuen Knoten an.
      *
@@ -19,4 +18,10 @@ class ListeNode {
     ListeNode(Object data) {
         this.data = data;
     }
+    public ListeNode getNext() {
+        return next;
+    }
+    public void setNext(ListeNode next) {
+        this.next = next;
+    }
 }
diff --git a/sources/src/main/java/pr2/generics/einfach/test/ListeTest.java b/sources/src/main/java/pr2/generics/einfach/test/ListeTest.java
index e680148..673d13b 100644
--- a/sources/src/main/java/pr2/generics/einfach/test/ListeTest.java
+++ b/sources/src/main/java/pr2/generics/einfach/test/ListeTest.java
@@ -22,7 +22,7 @@ public class ListeTest {
 
         l.add("Hallo");
         assertEquals(1, l.size());
-        l.add("Hugo");
+        l.add(34);
         assertEquals(2, l.size());
         l.add("Peter");
         l.add("Alfons");