diff --git a/user/classes/output/unified_filter.php b/user/classes/output/unified_filter.php
index 503fad19319..849a98664f6 100644
--- a/user/classes/output/unified_filter.php
+++ b/user/classes/output/unified_filter.php
@@ -23,6 +23,7 @@
  */
 namespace core_user\output;
 
+use moodle_url;
 use renderable;
 use renderer_base;
 use stdClass;
@@ -44,15 +45,22 @@ class unified_filter implements renderable, templatable {
     /** @var array $selectedoptions The list of selected filter option values. */
     protected $selectedoptions;
 
+    /** @var moodle_url|string $baseurl The url with params needed to call up this page. */
+    protected $baseurl;
+
     /**
      * unified_filter constructor.
      *
      * @param array $filteroptions The filter options.
      * @param array $selectedoptions The list of selected filter option values.
+     * @param string|moodle_url $baseurl The url with params needed to call up this page.
      */
-    public function __construct($filteroptions, $selectedoptions) {
+    public function __construct($filteroptions, $selectedoptions, $baseurl = null) {
         $this->filteroptions = $filteroptions;
         $this->selectedoptions = $selectedoptions;
+        if (!empty($baseurl)) {
+            $this->baseurl = new moodle_url($baseurl);
+        }
     }
 
     /**
@@ -64,7 +72,10 @@ class unified_filter implements renderable, templatable {
     public function export_for_template(renderer_base $output) {
         global $PAGE;
         $data = new stdClass();
-        $data->action = $PAGE->url->out(false);
+        if (empty($this->baseurl)) {
+            $this->baseurl = $PAGE->url;
+        }
+        $data->action = $this->baseurl->out(false);
 
         foreach ($this->selectedoptions as $option) {
             if (!isset($this->filteroptions[$option])) {
diff --git a/user/index.php b/user/index.php
index 993d5118e49..af2f71e9240 100644
--- a/user/index.php
+++ b/user/index.php
@@ -212,18 +212,18 @@ foreach ($enrolbuttons as $enrolbutton) {
 }
 echo html_writer::div($enrolbuttonsout, 'pull-right');
 
-// Render the unified filter.
-$renderer = $PAGE->get_renderer('core_user');
-echo $renderer->unified_filter($course, $context, $filtersapplied);
-
-echo '<div class="userlist">';
-
 // Should use this variable so that we don't break stuff every time a variable is added or changed.
 $baseurl = new moodle_url('/user/index.php', array(
         'contextid' => $context->id,
         'id' => $course->id,
         'perpage' => $perpage));
 
+// Render the unified filter.
+$renderer = $PAGE->get_renderer('core_user');
+echo $renderer->unified_filter($course, $context, $filtersapplied, $baseurl);
+
+echo '<div class="userlist">';
+
 $participanttable = new \core_user\participants_table($course->id, $groupid, $lastaccess, $roleid, $enrolid, $status,
     $searchkeywords, $bulkoperations, $selectall);
 $participanttable->define_baseurl($baseurl);
diff --git a/user/renderer.php b/user/renderer.php
index d3af40a1c8b..35711ce11e0 100644
--- a/user/renderer.php
+++ b/user/renderer.php
@@ -115,9 +115,10 @@ class core_user_renderer extends plugin_renderer_base {
      * @param stdClass $course The course object.
      * @param context $context The context object.
      * @param array $filtersapplied Array of currently applied filters.
+     * @param string|moodle_url $baseurl The url with params needed to call up this page.
      * @return bool|string
      */
-    public function unified_filter($course, $context, $filtersapplied) {
+    public function unified_filter($course, $context, $filtersapplied, $baseurl = null) {
         global $CFG, $DB, $USER;
 
         require_once($CFG->dirroot . '/enrol/locallib.php');
@@ -248,7 +249,7 @@ class core_user_renderer extends plugin_renderer_base {
         // Add missing applied filters to the filter options.
         $filteroptions = $this->handle_missing_applied_filters($filtersapplied, $filteroptions);
 
-        $indexpage = new \core_user\output\unified_filter($filteroptions, $filtersapplied);
+        $indexpage = new \core_user\output\unified_filter($filteroptions, $filtersapplied, $baseurl);
         $context = $indexpage->export_for_template($this->output);
 
         return $this->output->render_from_template('core_user/unified_filter', $context);