diff --git a/classes/form/form_delays_filter.php b/classes/form/form_delays_filter.php
index f262d60771f34918442eb373e1c12d25834151d1..3e416110a11708ac15661f3255cf2823db652e23 100644
--- a/classes/form/form_delays_filter.php
+++ b/classes/form/form_delays_filter.php
@@ -44,20 +44,6 @@ require_once($CFG->libdir . '/formslib.php');
  */
 class form_delays_filter extends \moodleform {
 
-    /**
-     * @var $cache cache the cache to get stored data from;
-     */
-    private $cache;
-
-    /**
-     * Constructor
-     *
-     * @param \moodle_url $url .
-     */
-    public function __construct($url) {
-        parent::__construct($url);
-    }
-
     /**
      * Defines forms elements
      */
diff --git a/delayedcourses.php b/delayedcourses.php
index 8d93f5e1b4aff45b2f6259d3941ffdecce60a76c..8957dbf68b95c0a0f218be9daf339d89aa5fd4a5 100644
--- a/delayedcourses.php
+++ b/delayedcourses.php
@@ -74,25 +74,25 @@ if ($action) {
         $categoryid = optional_param('catid', null, PARAM_INT);
 
         $params = [];
-        $where_course = [];
+        $whereforcourse = [];
 
         if ($coursename) {
-            $where_course[] = 'c.fullname LIKE :cname';
+            $whereforcourse[] = 'c.fullname LIKE :cname';
             $params['cname'] = '%' . $DB->sql_like_escape($coursename) . '%';
         }
         if ($categoryid) {
-            $where_course[] = 'cat.id = :catid';
+            $whereforcourse[] = 'cat.id = :catid';
             $params['catid'] = $categoryid;
         }
 
-        $where_course = implode(' AND ', $where_course);
+        $whereforcourse = implode(' AND ', $whereforcourse);
         if ($deleteglobal) {
             $sql = 'DELETE FROM {tool_lifecycle_delayed} d ';
-            if ($where_course) {
+            if ($whereforcourse) {
                 $sql .= 'WHERE d.courseid IN ( ' .
                             'SELECT c.id FROM {course} c ' .
                             'JOIN {course_categories} cat ON c.category = cat.id ' .
-                            'WHERE ' . $where_course .
+                            'WHERE ' . $whereforcourse .
                         ')';
             }
             $DB->execute($sql, $params);
@@ -101,11 +101,11 @@ if ($action) {
         if ($deleteseperate) {
             $sql = 'DELETE FROM {tool_lifecycle_delayed_workf} dw ' .
                     'WHERE TRUE ';
-            if ($where_course) {
+            if ($whereforcourse) {
                 $sql .= 'AND dw.courseid IN ( ' .
                             'SELECT c.id FROM {course} c ' .
                             'JOIN {course_categories} cat ON c.category = cat.id ' .
-                            'WHERE ' . $where_course .
+                            'WHERE ' . $whereforcourse .
                         ')';
             }
             if ($workflowfilterid) {
diff --git a/lang/en/tool_lifecycle.php b/lang/en/tool_lifecycle.php
index a8cc60b78413b5b5e1ceb0596760d9bb9c3eae44..95755a1eeb51806594e84c923b14c1eba356cf6e 100644
--- a/lang/en/tool_lifecycle.php
+++ b/lang/en/tool_lifecycle.php
@@ -175,7 +175,7 @@ $string['restore_subplugins_invalid'] = 'Wrong format of the backup file. The st
 $string['restore_step_does_not_exist'] = 'The step {$a} is not installed, but is included in the backup file. Please installed it first and try again.';
 $string['restore_trigger_does_not_exist'] = 'The trigger {$a} is not installed, but is included in the backup file. Please installed it first and try again.';
 
-// Events
+// Events.
 $string['process_triggered_event'] = 'A process has been triggered';
 $string['process_proceeded_event'] = 'A process has been proceeded';
 $string['process_rollback_event'] = 'A process has been rolled back';
@@ -189,7 +189,8 @@ $string['privacy:metadata:tool_lifecycle_action_log:stepindex'] = 'Index of the
 $string['privacy:metadata:tool_lifecycle_action_log:time'] = 'Time when the action was done.';
 $string['privacy:metadata:tool_lifecycle_action_log:userid'] = 'ID of the user that did the action.';
 $string['privacy:metadata:tool_lifecycle_action_log:action'] = 'Identifier of the action that was done.';
-// Delays
+
+// Delays.
 $string['delayed_courses_header'] = 'Delayed courses';
 $string['delete_delay'] = 'Delete delay';
 $string['globally_until_date'] = 'Globally until {$a}';