diff --git a/Doc/Sd1/coreClasses.xml b/Doc/Sd1/coreClasses.xml
index 1f2b9416f2909e244703c312a5205f71a75699ff..c06a4171a1062a1cdfb5f6443f379dacf0fb2a8b 100644
--- a/Doc/Sd1/coreClasses.xml
+++ b/Doc/Sd1/coreClasses.xml
@@ -720,7 +720,7 @@ b1.equals(b2): true </programlisting>
               <orderedlist>
                 <listitem>
                   <para>The <link
-                  xlink:href="https://prog.medieninformatik.hdm-stuttgart.de/java_visualize">Java
+                  xlink:href="https://prog.mi.hdm-stuttgart.de/java_visualize">Java
                   visualizer</link> may be helpful.</para>
                 </listitem>
 
diff --git a/Doc/Sd1/gettingStarted.xml b/Doc/Sd1/gettingStarted.xml
index 72de69e917c9ab0843385745bb4a6f7aa8882e77..c907e3e02699eae14f8d9e978f8f653c23bcc058 100644
--- a/Doc/Sd1/gettingStarted.xml
+++ b/Doc/Sd1/gettingStarted.xml
@@ -128,7 +128,7 @@
           program's memory management:</para>
 
           <para><link
-          xlink:href="https://prog.medieninformatik.hdm-stuttgart.de/java_visualize">http://prog.medieninformatik.hdm-stuttgart.de/java_visualize</link></para>
+          xlink:href="https://prog.mi.hdm-stuttgart.de/java_visualize">http://prog.mi.hdm-stuttgart.de/java_visualize</link></para>
 
           <para>Credits to <link
           xlink:href="https://github.com/daveagp/java_visualize/blob/master/README">David