diff --git a/mod/chat/lib.php b/mod/chat/lib.php
index 109fdad9178..128063246a0 100644
--- a/mod/chat/lib.php
+++ b/mod/chat/lib.php
@@ -1234,26 +1234,34 @@ function chat_reset_userdata($data) {
     global $CFG, $DB;
 
     $componentstr = get_string('modulenameplural', 'chat');
-    $status = array();
+    $status = [];
 
     if (!empty($data->reset_chat)) {
         $chatessql = "SELECT ch.id
                         FROM {chat} ch
                        WHERE ch.course=?";
-        $params = array($data->courseid);
+        $params = [$data->courseid];
 
         $DB->delete_records_select('chat_messages', "chatid IN ($chatessql)", $params);
         $DB->delete_records_select('chat_messages_current', "chatid IN ($chatessql)", $params);
         $DB->delete_records_select('chat_users', "chatid IN ($chatessql)", $params);
-        $status[] = array('component' => $componentstr, 'item' => get_string('removemessages', 'chat'), 'error' => false);
+        $status[] = [
+            'component' => $componentstr,
+            'item' => get_string('removemessages', 'chat'),
+            'error' => false,
+        ];
     }
 
     // Updating dates - shift may be negative too.
     if ($data->timeshift) {
         // Any changes to the list of dates that needs to be rolled should be same during course restore and course reset.
         // See MDL-9367.
-        shift_course_mod_dates('chat', array('chattime'), $data->timeshift, $data->courseid);
-        $status[] = array('component' => $componentstr, 'item' => get_string('datechanged'), 'error' => false);
+        shift_course_mod_dates('chat', ['chattime'], $data->timeshift, $data->courseid);
+        $status[] = [
+            'component' => $componentstr,
+            'item' => get_string('datechanged'),
+            'error' => false,
+        ];
     }
 
     return $status;