diff --git a/app/src/main/java/ch/nuth/zhaw/exbox/AVLSearchTree.java b/app/src/main/java/ch/nuth/zhaw/exbox/AVLSearchTree.java
index c7cefd9..e97f9a0 100644
--- a/app/src/main/java/ch/nuth/zhaw/exbox/AVLSearchTree.java
+++ b/app/src/main/java/ch/nuth/zhaw/exbox/AVLSearchTree.java
@@ -19,7 +19,7 @@ public class AVLSearchTree<T extends Comparable<T>> extends SortedBinaryTree<T>
     @Override
     protected int calcSize(TreeNode<T> p) {
         // TODO Implement (6.2)
-        return super.calcSize(p);
+        return super.calcSize(p) + p.values.size() - 1;
     }
 
     /**