diff --git a/mod/wiki/files.php b/mod/wiki/files.php
index 91a6df486ec..6ba9c6aba01 100644
--- a/mod/wiki/files.php
+++ b/mod/wiki/files.php
@@ -87,7 +87,7 @@ $PAGE->set_title(get_string('wikifiles', 'wiki'));
 $PAGE->set_heading($course->fullname);
 $PAGE->navbar->add(format_string(get_string('wikifiles', 'wiki')));
 echo $OUTPUT->header();
-echo $OUTPUT->heading($wiki->name);
+echo $OUTPUT->heading(format_string($wiki->name));
 echo $OUTPUT->box(format_module_intro('wiki', $wiki, $PAGE->cm->id), 'generalbox', 'intro');
 
 $renderer = $PAGE->get_renderer('mod_wiki');
diff --git a/mod/wiki/filesedit.php b/mod/wiki/filesedit.php
index 9713d2a93b4..fe5a159523d 100644
--- a/mod/wiki/filesedit.php
+++ b/mod/wiki/filesedit.php
@@ -95,7 +95,7 @@ if ($mform->is_cancelled()) {
 }
 
 echo $OUTPUT->header();
-echo $OUTPUT->heading($wiki->name);
+echo $OUTPUT->heading(format_string($wiki->name));
 echo $OUTPUT->box(format_module_intro('wiki', $wiki, $PAGE->cm->id), 'generalbox', 'intro');
 echo $OUTPUT->box_start('generalbox');
 $mform->display();
diff --git a/mod/wiki/pagelib.php b/mod/wiki/pagelib.php
index 6097e37d990..5acd88f4718 100644
--- a/mod/wiki/pagelib.php
+++ b/mod/wiki/pagelib.php
@@ -136,7 +136,7 @@ abstract class page_wiki {
 
         echo $OUTPUT->header();
         $wiki = $PAGE->activityrecord;
-        echo $OUTPUT->heading($wiki->name);
+        echo $OUTPUT->heading(format_string($wiki->name));
 
         echo $this->wikioutput->wiki_info();