diff --git a/CHANGES.md b/CHANGES.md
index 6e6d383..0d0f51b 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -6,6 +6,7 @@ Changes
 
 ### Unreleased
 
+* 2023-10-14 - Make codechecker happy again
 * 2023-10-10 - Updated Moodle Plugin CI to latest upstream recommendations
 * 2023-04-30 - Tests: Updated Moodle Plugin CI to use PHP 8.1 and Postgres 13 from Moodle 4.1 on.
 
diff --git a/classes/event/courses_sorted.php b/classes/event/courses_sorted.php
index 1058fe6..2053a96 100644
--- a/classes/event/courses_sorted.php
+++ b/classes/event/courses_sorted.php
@@ -70,6 +70,6 @@ public function get_description() {
      * @return \moodle_url
      */
     public function get_url() {
-        return new \moodle_url('/course/index.php', array('categoryid' => $this->objectid));
+        return new \moodle_url('/course/index.php', ['categoryid' => $this->objectid]);
     }
 }
diff --git a/db/events.php b/db/events.php
index d0e9049..c0ecad1 100644
--- a/db/events.php
+++ b/db/events.php
@@ -24,15 +24,15 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$observers = array(
-    array(
+$observers = [
+    [
         'eventname' => '\core\event\course_created',
         'includefile' => '/local/resort_courses/locallib.php',
         'callback' => 'resort_course_eventhandler',
-    ),
-    array(
+    ],
+    [
         'eventname' => '\core\event\course_updated',
         'includefile' => '/local/resort_courses/locallib.php',
         'callback' => 'resort_course_eventhandler',
-    ),
-);
+    ],
+];
diff --git a/db/tasks.php b/db/tasks.php
index dcdc9b5..368c9a6 100644
--- a/db/tasks.php
+++ b/db/tasks.php
@@ -24,8 +24,8 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$tasks = array(
-        array(
+$tasks = [
+        [
                 'classname' => 'local_resort_courses\task\resort_courses',
                 'blocking' => 0,
                 'minute' => '0',
@@ -33,6 +33,6 @@
                 'day' => '*',
                 'month' => '*',
                 'dayofweek' => '0',
-                'disabled' => 1
-        )
-);
+                'disabled' => 1,
+        ],
+];
diff --git a/locallib.php b/locallib.php
index 991f994..992067c 100644
--- a/locallib.php
+++ b/locallib.php
@@ -57,7 +57,7 @@ function resort_course_eventhandler($eventdata) {
     }
 
     // Get category.
-    $category = $DB->get_record('course_categories', array('id' => $eventcourse->category));
+    $category = $DB->get_record('course_categories', ['id' => $eventcourse->category]);
     if (!$category) {
         // Now we have an error, but if we return false, the event will stay in the event queue.
         // Let's return and leave the category unsorted.
@@ -178,7 +178,7 @@ function resort_course_category($category, $cronrunning = false) {
         // Do the resorting.
         $i = 1;
         foreach ($courses as $course) {
-            $DB->set_field('course', 'sortorder', $category->sortorder + $i, array('id' => $course->id));
+            $DB->set_field('course', 'sortorder', $category->sortorder + $i, ['id' => $course->id]);
             $i++;
         }
 
@@ -187,13 +187,13 @@ function resort_course_category($category, $cronrunning = false) {
         cache_helper::purge_by_event('changesincourse');
 
         // Log the event.
-        $logevent = \local_resort_courses\event\courses_sorted::create(array(
+        $logevent = \local_resort_courses\event\courses_sorted::create([
             'objectid' => $category->id,
             'context' => context_coursecat::instance($category->id),
-            'other' => array(
+            'other' => [
                 'cronrunning' => $cronrunning,
-            )
-        ));
+            ],
+        ]);
         $logevent->trigger();
     }
 
diff --git a/settings.php b/settings.php
index da4cbc2..df2ab58 100644
--- a/settings.php
+++ b/settings.php
@@ -67,7 +67,7 @@
         $page->add(new admin_setting_configmultiselect('local_resort_courses/skipcategories',
                 get_string('skipcategories', 'local_resort_courses', null, true),
                 get_string('skipcategories_desc', 'local_resort_courses', null, true),
-                array(),
+                [],
                 $categories));
 
         // Create skip categories recursively widget.