diff --git a/mod/wiki/files.php b/mod/wiki/files.php
index 16f3f732e89..06e62d079d5 100644
--- a/mod/wiki/files.php
+++ b/mod/wiki/files.php
@@ -89,20 +89,9 @@ $PAGE->navbar->add(format_string(get_string('wikifiles', 'wiki')));
 $PAGE->set_secondary_active_tab('modulepage');
 
 echo $OUTPUT->header();
-if (!$PAGE->has_secondary_navigation()) {
-    echo $OUTPUT->heading(format_string($wiki->name));
-}
-
-// Render the activity information.
-$cminfo = cm_info::create($cm);
-$completiondetails = \core_completion\cm_completion_details::get_instance($cminfo, $USER->id);
-$activitydates = \core\activity_dates::get_dates_for_module($cminfo, $USER->id);
-echo $OUTPUT->activity_information($cminfo, $completiondetails, $activitydates);
 
 $renderer = $PAGE->get_renderer('mod_wiki');
 
-echo $OUTPUT->box(format_module_intro('wiki', $wiki, $PAGE->cm->id), 'generalbox', 'intro');
-
 $actionbar = new \mod_wiki\output\action_bar($pageid, $PAGE->url);
 echo $renderer->render_action_bar($actionbar);
 
diff --git a/mod/wiki/filesedit.php b/mod/wiki/filesedit.php
index 41d363ebd32..e292abf1cfd 100644
--- a/mod/wiki/filesedit.php
+++ b/mod/wiki/filesedit.php
@@ -79,6 +79,9 @@ $PAGE->set_heading($course->fullname);
 $PAGE->navbar->add(format_string(get_string('wikifiles', 'wiki')), $CFG->wwwroot . '/mod/wiki/files.php?pageid=' . $pageid);
 $PAGE->navbar->add(format_string($title));
 $PAGE->set_secondary_active_tab('modulepage');
+$PAGE->activityheader->set_attrs([
+    'hidecompletion' => true
+]);
 
 $data = new stdClass();
 $data->returnurl = $returnurl;
@@ -98,8 +101,6 @@ if ($mform->is_cancelled()) {
 }
 
 echo $OUTPUT->header();
-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();
 echo $OUTPUT->box_end();
diff --git a/mod/wiki/pagelib.php b/mod/wiki/pagelib.php
index 97e4e2709f7..8496d3978cf 100644
--- a/mod/wiki/pagelib.php
+++ b/mod/wiki/pagelib.php
@@ -125,7 +125,7 @@ abstract class page_wiki {
      * This method prints the top of the page.
      */
     function print_header() {
-        global $OUTPUT, $PAGE, $CFG, $USER, $SESSION;
+        global $OUTPUT, $PAGE, $SESSION;
 
         $PAGE->set_heading($PAGE->course->fullname);
 
@@ -138,12 +138,6 @@ abstract class page_wiki {
         $this->create_navbar();
 
         echo $OUTPUT->header();
-        $wiki = $PAGE->activityrecord;
-        if (!$PAGE->has_secondary_navigation()) {
-            echo $OUTPUT->heading(format_string($wiki->name));
-        }
-
-        echo $this->wikioutput->wiki_info();
 
         if (!empty($this->page)) {
             echo $this->action_bar($this->page->id, $PAGE->url);
diff --git a/mod/wiki/renderer.php b/mod/wiki/renderer.php
index 78214a19bbc..dcd68384dbf 100644
--- a/mod/wiki/renderer.php
+++ b/mod/wiki/renderer.php
@@ -234,9 +234,21 @@ class mod_wiki_renderer extends plugin_renderer_base {
 
         return $output;
     }
+
+    /**
+     * Print the wiki activity information and intro
+     *
+     * @return string
+     * @deprecated since 4.0. Now handled in PAGE's activity header
+     */
     public function wiki_info() {
         global $USER;
 
+        debugging(
+            'wiki_info() is deprecated. Output is handled within the $PAGE->activityheader instead.',
+            DEBUG_DEVELOPER
+        );
+
         // Display any activity information (eg completion requirements / dates).
         $cminfo = cm_info::create($this->page->cm);
         $completiondetails = \core_completion\cm_completion_details::get_instance($cminfo, $USER->id);
diff --git a/mod/wiki/upgrade.txt b/mod/wiki/upgrade.txt
index 6f643bf87b8..00c7cf67bcd 100644
--- a/mod/wiki/upgrade.txt
+++ b/mod/wiki/upgrade.txt
@@ -1,5 +1,7 @@
 This files describes API changes in /mod/wiki/*,
 information provided here is intended especially for developers.
+=== 4.0 ===
+* wiki_info has been deprecated. Output will be handled within the $PAGE->activityheader instead.
 
 === 3.8 ===
 * The following functions have been finally deprecated and can not be used anymore: