diff --git a/modules/event-participants/Controllers/class-createevent.php b/modules/event-participants/Controllers/class-createevent.php
index 7c8ae2c..0b310a0 100644
--- a/modules/event-participants/Controllers/class-createevent.php
+++ b/modules/event-participants/Controllers/class-createevent.php
@@ -17,7 +17,7 @@ class CreateEvent {
         $post_data['amount_default'] = str_replace(',', '.', $_POST['amount_default']);
         $post_data['amount_social'] = str_replace(',', '.', $_POST['amount_social']);
 
-        $post_data['contributing_tribes'] = str_replace( PHP_EOL, ',', $post_data['contributing_tribes'] );
+        $post_data['contributing_tribes'] = serialize( explode(PHP_EOL, $post_data['contributing_tribes'] ) );
 
 		$new_event_id = $dbHandler->insertRows(
 			'kompass_veranstaltungen_index',
diff --git a/modules/event-participants/Controllers/class-updateevent.php b/modules/event-participants/Controllers/class-updateevent.php
index 30746ad..800a7f6 100644
--- a/modules/event-participants/Controllers/class-updateevent.php
+++ b/modules/event-participants/Controllers/class-updateevent.php
@@ -17,7 +17,7 @@ class UpdateEvent {
         $post_data['amount_default'] = str_replace(',', '.', $_POST['amount_default']);
         $post_data['amount_social'] = str_replace(',', '.', $_POST['amount_social']);
 
-        $post_data['contributing_tribes'] = str_replace( PHP_EOL, ',', $post_data['contributing_tribes'] );
+        $post_data['contributing_tribes'] = serialize( explode(PHP_EOL, $post_data['contributing_tribes'] ) );
 
 		$dbHandler->updateRows(
 			'kompass_veranstaltungen_index',
diff --git a/modules/event-participants/Views/event-edit-form.php b/modules/event-participants/Views/event-edit-form.php
index 53cabef..f0f04ca 100644
--- a/modules/event-participants/Views/event-edit-form.php
+++ b/modules/event-participants/Views/event-edit-form.php
@@ -5,12 +5,14 @@ use Bdp\Modules\EventParticipants\Models\Event as Event;
 function kompass_print_event_edit_form(?int $event_id = null)
 {
     $event = null;
+    $tribes = '';
     if (null === $event_id) {
         $page = 'kompass-events&action=create-event';
 
     } else {
         $page = 'kompass-events&action=update-event&event-id=' . $event_id;
         $event = Event::loadById($event_id);
+        $tribes = implode(PHP_EOL, unserialize($event->contributing_tribes));
     }
 
     $events_settings = BDP_LV_PLUGIN_SLUG . '-events-settings';
@@ -101,7 +103,7 @@ function kompass_print_event_edit_form(?int $event_id = null)
         'kompass_print_textbox',
         $events_settings,
         'events_settings',
-        ['setting' => 'contributing_tribes', 'style' => 'width: 256px', 'lines' => 5, 'value' => str_replace(',', PHP_EOL, null !== $event ? $event->contributing_tribes : ''), 'appendix' => '<br />' . __('Please one line per row', BDP_LV_PLUGIN_SLUG)] );
+        ['setting' => 'contributing_tribes', 'style' => 'width: 256px', 'lines' => 5, 'value' => $tribes, 'appendix' => '<br />' . __('Please one line per row', BDP_LV_PLUGIN_SLUG)] );
 
     do_settings_sections($events_settings);
     submit_button();