diff --git a/public/mod/forum/search.php b/public/mod/forum/search.php
index 321dd94bd80..4f9caa8a1b1 100644
--- a/public/mod/forum/search.php
+++ b/public/mod/forum/search.php
@@ -279,8 +279,10 @@ if (!$posts = forum_search_posts($searchterms, $course->id, $page*$perpage, $per
     if (!$PAGE->has_secondary_navigation()) {
         echo $OUTPUT->heading($strforums, 2);
     }
-    echo $OUTPUT->heading($strsearchresults, 3);
-    echo $OUTPUT->heading(get_string("noposts", "forum"), 4);
+    $PAGE->activityheader->set_title($strsearchresults);
+    $searchresultsheadinglevel = $PAGE->activityheader->get_heading_level();
+    echo $OUTPUT->heading($strsearchresults, $searchresultsheadinglevel);
+    echo $OUTPUT->heading(get_string("noposts", "forum"), $searchresultsheadinglevel + 1);
 
     if (!$individualparams) {
         $words = $search;