diff --git a/_includes/header.html b/_includes/header.html
index 7cecf78..0971175 100644
--- a/_includes/header.html
+++ b/_includes/header.html
@@ -14,11 +14,11 @@
         </div>
         <div class="navbar-collapse collapse">
             <ul class="nav navbar-nav" id="footer-nav-links">
-                <!-- <li>
-                    <a href="https://fahrplan.hackimpott.de/hip3/schedule/" target="_blank">
-                        Fahrplan
+                <li>
+                    <a href="https://pretalx.chaospott.de/hip4/" target="_blank">
+                        Call for Participation
                     </a>
-		        </li> -->
+		        </li>
                 <li>
                     <a href="infos.html">
                         Infos