diff --git a/templates/main.html b/templates/main.html
index 960908e..f278f7f 100644
--- a/templates/main.html
+++ b/templates/main.html
@@ -14,10 +14,10 @@
    <h2>{{ pins[pin].name }}
    {% if pins[pin].state == true %}
       ist gerade <strong>an</strong></h2><div class="row"><div class="col-md-2">
-      <a href="/{{pin}}/off" class="btn btn-block btn-lg btn-default" role="button">Turn off</a></div></div>
+      <a href="/{{pins[pin].nr}}/off" class="btn btn-block btn-lg btn-default" role="button">Turn off</a></div></div>
    {% else %}
       ist gerade <strong>aus</strong></h2><div class="row"><div class="col-md-2">
-      <a href="/{{pin}}/on" class="btn btn-block btn-lg btn-primary" role="button">Turn on</a></div></div>
+      <a href="/{{pins[pin].nr}}/on" class="btn btn-block btn-lg btn-primary" role="button">Turn on</a></div></div>
    {% endif %}
    {% endfor %}
    {% for pin in pins_in %}