diff --git a/tdf4/index.html b/tdf4/index.html
index 9c2092a..383045e 100644
--- a/tdf4/index.html
+++ b/tdf4/index.html
@@ -110,7 +110,7 @@
           </div>
         </div>
         <div class="button-container">
-          <a href="https://cfp.cttue.de/tdf5/" class="button">Fahrplan</a>
+          <a href="https://cfp.cttue.de/tdf4/schedule/" class="button">Fahrplan</a>
         </div>
       </div>