diff --git a/renderer.php b/renderer.php
index f1b95a6..9f7fe4a 100644
--- a/renderer.php
+++ b/renderer.php
@@ -798,6 +798,7 @@ public function ouwiki_get_links_content() {
             }
             $output .= html_writer::end_tag('li');
         }
+        $participationstr = '';
         if ($this->params->canview == OUWIKI_USER_PARTICIPATION) {
             $participationstr = get_string('participationbyuser', 'ouwiki');
             $participationpage = 'participation.php?' .