diff --git a/lib/adminlib.php b/lib/adminlib.php
index 64dc73e63fb32..8ee900ac7baa1 100644
--- a/lib/adminlib.php
+++ b/lib/adminlib.php
@@ -2828,11 +2828,16 @@ protected static function get_duration_text($seconds) {
         }
         $data = self::parse_seconds($seconds);
         switch ($data['u']) {
-            case (60*60*24*7) : return get_string('numweeks', '', $data['v']);
-            case (60*60*24) : return get_string('numdays', '', $data['v']);
-            case (60*60) : return get_string('numhours', '', $data['v']);
-            case (60) : return get_string('numminutes', '', $data['v']);
-            default: return get_string('numseconds', '', $data['v']*$data['u']);
+            case (60*60*24*7):
+                return get_string('numweeks', '', $data['v']);
+            case (60*60*24):
+                return get_string('numdays', '', $data['v']);
+            case (60*60):
+                return get_string('numhours', '', $data['v']);
+            case (60):
+                return get_string('numminutes', '', $data['v']);
+            default:
+                return get_string('numseconds', '', $data['v']*$data['u']);
         }
     }
 
@@ -2843,7 +2848,7 @@ protected static function get_duration_text($seconds) {
      * @return array
      */
     protected static function parse_seconds($seconds) {
-        foreach (self::get_units() as $unit=>$unused) {
+        foreach (self::get_units() as $unit => $unused) {
             if ($seconds % $unit === 0) {
                 return array('v'=>(int)($seconds/$unit), 'u'=>$unit);
             }
@@ -2908,7 +2913,7 @@ public function output_html($data, $query='') {
         $return = '<div class="form-duration defaultsnext">';
         $return .= '<input type="text" size="5" id="'.$this->get_id().'v" name="'.$this->get_full_name().'[v]" value="'.s($data['v']).'" />';
         $return .= '<select id="'.$this->get_id().'u" name="'.$this->get_full_name().'[u]">';
-        foreach ($units as $val=>$text) {
+        foreach ($units as $val => $text) {
             $selected = '';
             if ($data['v'] == 0) {
                 if ($val == $this->defaultunit) {
diff --git a/lib/form/duration.php b/lib/form/duration.php
index 9894e3eeb7af4..4298f00215048 100644
--- a/lib/form/duration.php
+++ b/lib/form/duration.php
@@ -58,8 +58,8 @@ class MoodleQuickForm_duration extends MoodleQuickForm_group {
     * @param string $elementName Element's name
     * @param mixed $elementLabel Label(s) for an element
     * @param array $options Options to control the element's display. Recognised values are
-                   'optional' => true/false - whether to display an 'enabled' checkbox next to the element.
-                   'defaultunit' => 1|60|3600|86400|604800 - the default unit to display when the time is blank.
+    *              'optional' => true/false - whether to display an 'enabled' checkbox next to the element.
+    *              'defaultunit' => 1|60|3600|86400|604800 - the default unit to display when the time is blank.
     *              If not specified, minutes is used.
     * @param mixed $attributes Either a typical HTML attribute string or an associative array
     */