diff --git a/theme/templates/termine.html b/theme/templates/termine.html
index 686cc06..9cca6b3 100644
--- a/theme/templates/termine.html
+++ b/theme/templates/termine.html
@@ -30,7 +30,7 @@
       </thead>
       <tbody>
         {# loop over all events that have not started yet #}
-        {% for t in page.termine if t.enddate >= DATETIME_NOW %}
+        {% for t in page.termine | selectattr("startdate", ">=", DATETIME_NOW) %}
         <tr>
           <td class="event-info"><strong>{{ t.startdate | strftime(date_format) }}{% if t.enddate %}–{{t.enddate | strftime(date_format) }}{% elif t.starttime %} {{ t.starttime | strftime(time_format) }}{% endif %}</strong><br>{{ t.location }}</td>
           <td class="event-detail">