diff --git a/grade/report/history/classes/filter_form.php b/grade/report/history/classes/filter_form.php
index 21f26c66330..0e51229338f 100644
--- a/grade/report/history/classes/filter_form.php
+++ b/grade/report/history/classes/filter_form.php
@@ -55,7 +55,7 @@ class filter_form extends \moodleform {
         $mform->addElement('static', 'userselect', get_string('selectusers', 'gradereport_history'), $userbutton);
         $mform->addElement('static', 'selectednames', get_string('selectedusers', 'gradereport_history'), $names);
 
-        $mform->addElement('select', 'itemid', get_string('gradeitem', 'gradereport_history'), $itemids);
+        $mform->addElement('select', 'itemid', get_string('gradeitem', 'grades'), $itemids);
         $mform->setType('itemid', PARAM_INT);
 
         $mform->addElement('select', 'grader', get_string('grader', 'gradereport_history'), $graders);
diff --git a/grade/report/history/classes/output/renderer.php b/grade/report/history/classes/output/renderer.php
index 515a95c0fe1..384822a4ffc 100644
--- a/grade/report/history/classes/output/renderer.php
+++ b/grade/report/history/classes/output/renderer.php
@@ -45,7 +45,7 @@ class renderer extends \plugin_renderer_base {
      *
      * @return string HTML to display
      */
-    public function render_user_button(user_button $button) {
+    protected function render_user_button(user_button $button) {
         $attributes = array('type'     => 'button',
                             'class'    => 'selectortrigger',
                             'value'    => $button->label,
diff --git a/grade/report/history/classes/output/tablelog.php b/grade/report/history/classes/output/tablelog.php
index 370076acd5b..0132406522e 100644
--- a/grade/report/history/classes/output/tablelog.php
+++ b/grade/report/history/classes/output/tablelog.php
@@ -123,7 +123,7 @@ class tablelog extends \table_sql implements \renderable {
 
         // Set table configs.
         $this->collapsible(true);
-        $this->sortable(true);
+        $this->sortable(true, 'timemodified', SORT_DESC);
         $this->pageable(true);
         $this->no_sorting('grader');
     }
@@ -151,13 +151,13 @@ class tablelog extends \table_sql implements \renderable {
 
         // Add remaining headers.
         $cols = array_merge($cols, array(
-            'itemname' => get_string('gradeitem', 'gradereport_history'),
+            'itemname' => get_string('gradeitem', 'grades'),
             'prevgrade' => get_string('gradeold', 'gradereport_history'),
             'finalgrade' => get_string('gradenew', 'gradereport_history'),
             'grader' => get_string('grader', 'gradereport_history'),
             'source' => get_string('source', 'gradereport_history'),
-            'overridden' => get_string('overridden', 'gradereport_history'),
-            'locked' => get_string('locked', 'gradereport_history'),
+            'overridden' => get_string('overridden', 'grades'),
+            'locked' => get_string('locked', 'grades'),
             'excluded' => get_string('excluded', 'gradereport_history'),
             'feedback' => get_string('feedbacktext', 'gradereport_history')
             )
@@ -231,7 +231,7 @@ class tablelog extends \table_sql implements \renderable {
      * @return string HTML to display
      */
     public function col_overridden(\stdClass $history) {
-        return $history->overridden ? get_string('yes', 'gradereport_history') : get_string('no', 'gradereport_history');
+        return $history->overridden ? get_string('yes') : get_string('no');
     }
 
     /**
@@ -242,7 +242,7 @@ class tablelog extends \table_sql implements \renderable {
      * @return string HTML to display
      */
     public function col_locked(\stdClass $history) {
-        return $history->locked ? get_string('yes', 'gradereport_history') : get_string('no', 'gradereport_history');
+        return $history->locked ? get_string('yes') : get_string('no');
     }
 
     /**
@@ -253,7 +253,7 @@ class tablelog extends \table_sql implements \renderable {
      * @return string HTML to display
      */
     public function col_excluded(\stdClass $history) {
-        return $history->excluded ? get_string('yesshort', 'gradereport_history') : get_string('noshort', 'gradereport_history');
+        return $history->excluded ? get_string('yes') : get_string('no');
     }
 
     /**
diff --git a/grade/report/history/db/access.php b/grade/report/history/db/access.php
index 9800850a20e..0d1bd5d3560 100644
--- a/grade/report/history/db/access.php
+++ b/grade/report/history/db/access.php
@@ -35,6 +35,7 @@ $capabilities = array(
             'teacher' => CAP_ALLOW,
             'editingteacher' => CAP_ALLOW,
             'manager' => CAP_ALLOW
-        )
+        ),
+        'clonepermissionsfrom' => 'gradereport/grader:view'
     )
 );
diff --git a/grade/report/history/lang/en/gradereport_history.php b/grade/report/history/lang/en/gradereport_history.php
index 5ac645bc9f0..651df2543ef 100644
--- a/grade/report/history/lang/en/gradereport_history.php
+++ b/grade/report/history/lang/en/gradereport_history.php
@@ -36,7 +36,6 @@ $string['foundoneuser'] = '1 user found';
 $string['foundnusers'] = '{$a} users found';
 $string['feedbacktext'] = 'Feedback text';
 $string['finishselectingusers'] = 'Finish selecting users';
-$string['gradeitem'] = 'Grade item';
 $string['gradenew'] = 'Revised grade';
 $string['gradeold'] = 'Original grade';
 $string['grader'] = 'Grader';
@@ -44,9 +43,6 @@ $string['history:view'] = 'View the grade history';
 $string['historyperpage'] = 'History entries per page';
 $string['historyperpage_help'] = 'This setting determines the number of history entries displayed per page in the history report.';
 $string['loadmoreusers'] = 'Load more users...';
-$string['locked'] = 'Locked';
-$string['noshort'] = 'N';
-$string['overridden'] = 'Overridden';
 $string['pluginname'] = 'Grade history';
 $string['preferences'] = 'Grade history preferences';
 $string['revisedonly'] = 'Revised grades only';
@@ -59,4 +55,3 @@ $string['selectedusers'] = 'Selected users';
 $string['source'] = 'Source';
 $string['useractivitygrade'] = '{$a} grade';
 $string['useractivityfeedback'] = '{$a} feedback';
-$string['yesshort'] = 'Y';
diff --git a/grade/report/history/settings.php b/grade/report/history/settings.php
index 51b20d66fb9..c841c805713 100644
--- a/grade/report/history/settings.php
+++ b/grade/report/history/settings.php
@@ -27,7 +27,10 @@ defined('MOODLE_INTERNAL') || die;
 if ($ADMIN->fulltree) {
 
     // Add settings for this module to the $settings object (it's already defined).
-    $settings->add(new admin_setting_configtext('grade_report_historyperpage', get_string('historyperpage', 'gradereport_history'),
-            get_string('historyperpage_help', 'gradereport_history'), 50));
+    $settings->add(new admin_setting_configtext('grade_report_historyperpage',
+        new lang_string('historyperpage', 'gradereport_history'),
+        new lang_string('historyperpage_help', 'gradereport_history'),
+        50
+    ));
 
 }
diff --git a/grade/report/history/tests/report_test.php b/grade/report/history/tests/report_test.php
index 1d39bba8f34..7a3959d2a4a 100644
--- a/grade/report/history/tests/report_test.php
+++ b/grade/report/history/tests/report_test.php
@@ -115,7 +115,7 @@ class gradereport_history_report_testcase extends advanced_testcase {
         $grades['c2m2u1f'] = $this->create_grade_history(array('itemid' => $gi->id, 'userid' => $u1->id,
             'timemodified' => $now + 70, 'finalgrade' => 25));      // Not revised.
 
-        // TODO MDL-46737 Handle deleted/non-existing grade items.
+        // TODO MDL-46736 Handle deleted/non-existing grade items.
         // Histories with missing grade items, considered as deleted.
         // $grades['c2x1u5'] = $this->create_grade_history($giparams + array('itemid' => -1, 'userid' => $u5->id, 'courseid' => $c1->id));
         // $grades['c2x2u5'] = $this->create_grade_history($giparams + array('itemid' => 999999, 'userid' => $u5->id, 'courseid' => $c1->id));
diff --git a/grade/report/history/users_ajax.php b/grade/report/history/users_ajax.php
index f092357c839..387a1aab186 100644
--- a/grade/report/history/users_ajax.php
+++ b/grade/report/history/users_ajax.php
@@ -45,7 +45,6 @@ require_capability('moodle/grade:viewall', $context);
 
 $outcome = new stdClass();
 $outcome->success = true;
-$outcome->response = new stdClass();
 $outcome->error = '';
 
 $users = \gradereport_history\helper::get_users($context, $search, $page, 25);
@@ -71,4 +70,6 @@ foreach ($users as $user) {
 
 $outcome->success = true;
 
+echo $OUTPUT->header();
 echo json_encode($outcome);
+echo $OUTPUT->footer();
diff --git a/lib/classes/plugin_manager.php b/lib/classes/plugin_manager.php
index e45f6235311..69a706ae060 100644
--- a/lib/classes/plugin_manager.php
+++ b/lib/classes/plugin_manager.php
@@ -1034,7 +1034,7 @@ class core_plugin_manager {
             ),
 
             'gradereport' => array(
-                'grader', 'outcomes', 'overview', 'user'
+                'grader', 'history', 'outcomes', 'overview', 'user'
             ),
 
             'gradingform' => array(