diff --git a/templates/dates/seminar_html.php b/templates/dates/seminar_html.php
index ce84efdbbb26749e14676f9acd80681c1e7ac30e..e4362cf871e15b9604a5d49acd920e95815482e2 100644
--- a/templates/dates/seminar_html.php
+++ b/templates/dates/seminar_html.php
@@ -47,12 +47,12 @@ if (!$dates['regular']['turnus_data'] && empty($dates['irregular'])) {
 
     if (isset($dates['irregular']) && is_array($dates['irregular'])) {
         foreach ($dates['irregular'] as $date) {
+            if (!isset($irregular_rooms[$date['resource_id']])) {
+                $irregular_rooms[$date['resource_id']] = 0;
+            }
             $irregular[] = $date;
             $irregular_strings[] = $date['tostring'];
             if ($date['resource_id']) {
-                if (!isset($irregular_rooms[$date['resource_id']])) {
-                    $irregular_rooms[$date['resource_id']] = 0;
-                }
                 $irregular_rooms[$date['resource_id']]++;
             } elseif ($date['raum']) {
                 $temp = '(' . htmlReady($date['raum']) . ')';