diff --git a/date.devel_generate.inc b/date.devel_generate.inc
index 6c61e23..739d0d0 100644
--- a/date.devel_generate.inc
+++ b/date.devel_generate.inc
@@ -41,7 +41,7 @@ function date_devel_generate($entity, $field, $instance, $bundle) {
 
   // Modify End date by 1 hour to 3 days, shorter for repeating dates
   // longer for others.
-  $start2 = clone($start);
+  $start2 = clone $start;
   $max = !empty($field['settings']['repeat']) ? 720 : 4320;
   $max = 240;
   date_modify($start2, '+' . mt_rand(60, $max) . ' minutes');
diff --git a/date.field.inc b/date.field.inc
index 6c36d0f..02572b9 100644
--- a/date.field.inc
+++ b/date.field.inc
@@ -374,7 +374,7 @@ function date_field_validate($entity_type, $entity, $field, $instance, $langcode
         $process = date_process_values($field, $instance);
         $date1 = new DateObject($item['value'], $item['timezone'], date_type_format($field['type']));
         if (count($process) == 1 || (empty($item['value2']) && $item['value2'] !== 0)) {
-          $date2 = clone($date1);
+          $date2 = clone $date1;
         }
         else {
           $date2 = new DateObject($item['value2'], $item['timezone'], date_type_format($field['type']));
diff --git a/date_api/date_api.module b/date_api/date_api.module
index 2a973cc..2a4fa9e 100644
--- a/date_api/date_api.module
+++ b/date_api/date_api.module
@@ -998,8 +998,8 @@ class DateObject extends DateTime {
   public function difference($date2_in, $measure = 'seconds', $absolute = TRUE) {
     // Create cloned objects or original dates will be impacted by the
     // date_modify() operations done in this code.
-    $date1 = clone($this);
-    $date2 = clone($date2_in);
+    $date1 = clone $this;
+    $date2 = clone $date2_in;
     if (is_object($date1) && is_object($date2)) {
       $diff = date_format($date2, 'U') - date_format($date1, 'U');
       if ($diff == 0) {
@@ -2049,7 +2049,7 @@ function date_week_range($week, $year) {
   date_modify($min_date, '-' . strval((7 + $day_wday - $first_day) % 7) . ' days');
 
   // Move forwards to the last day of the week.
-  $max_date = clone($min_date);
+  $max_date = clone $min_date;
   date_modify($max_date, '+6 days');
 
   if (date_format($min_date, 'Y') != $year) {
@@ -2083,7 +2083,7 @@ function date_iso_week_range($week, $year) {
   }
 
   // Move forwards to the last day of the week.
-  $max_date = clone($min_date);
+  $max_date = clone $min_date;
   date_modify($max_date, '+6 days');
   return array($min_date, $max_date);
 }
@@ -2134,7 +2134,7 @@ function date_week($date) {
 
   // Remove the leap week if it's present.
   if ($date_year > intval($parts[0])) {
-    $last_date = clone($date);
+    $last_date = clone $date;
     date_modify($last_date, '-7 days');
     $week = date_format($last_date, 'W') + 1;
   }
diff --git a/date_api/date_api_ical.inc b/date_api/date_api_ical.inc
index 4911298..9f7b894 100644
--- a/date_api/date_api_ical.inc
+++ b/date_api/date_api_ical.inc
@@ -535,7 +535,7 @@ function date_ical_parse_duration(&$subgroup, $field = 'DURATION') {
     $timezone = 'UTC';
   }
   $date = new DateObject($start_date, $timezone);
-  $date2 = clone($date);
+  $date2 = clone $date;
   foreach ($items as $item => $count) {
     if ($count > 0) {
       date_modify($date2, '+' . $count . ' ' . $item);
diff --git a/date_api/date_api_sql.inc b/date_api/date_api_sql.inc
index a95ca4e..6294fc6 100644
--- a/date_api/date_api_sql.inc
+++ b/date_api/date_api_sql.inc
@@ -1143,7 +1143,7 @@ class date_sql_handler {
     // Build a range from a period-only argument (assumes the min date is now.)
     if (empty($parts[0]['date']) && !empty($parts[0]['period']) && (empty($parts[1]))) {
       $min_date = date_now();
-      $max_date = clone($min_date);
+      $max_date = clone $min_date;
       foreach ($parts[0]['period'] as $part => $value) {
         date_modify($max_date, "+$value $part");
       }
@@ -1153,7 +1153,7 @@ class date_sql_handler {
     // Build a range from a period to period argument.
     if (empty($parts[0]['date']) && !empty($parts[0]['period']) && !empty($parts[1]['period'])) {
       $min_date = date_now();
-      $max_date = clone($min_date);
+      $max_date = clone $min_date;
       foreach ($parts[0]['period'] as $part => $value) {
         date_modify($min_date, "+$value $part");
       }
@@ -1176,7 +1176,7 @@ class date_sql_handler {
       // Build a range from start date + period.
       elseif (!empty($parts[1]['period'])) {
         foreach ($parts[1]['period'] as $part => $value) {
-          $max_date = clone($min_date);
+          $max_date = clone $min_date;
           date_modify($max_date, "+$value $part");
         }
         date_modify($max_date, '-1 second');
diff --git a/date_repeat/date_repeat_calc.inc b/date_repeat/date_repeat_calc.inc
index d840df6..bb02928 100644
--- a/date_repeat/date_repeat_calc.inc
+++ b/date_repeat/date_repeat_calc.inc
@@ -132,7 +132,7 @@ function _date_repeat_calc($rrule, $start, $end, $exceptions, $timezone, $additi
 
   if (!empty($rrule['BYMONTHDAY'])) {
     $finished = FALSE;
-    $current_day = clone($start_date);
+    $current_day = clone $start_date;
     $direction_days = array();
     // Deconstruct the day in case it has a negative modifier.
     foreach ($rrule['BYMONTHDAY'] as $day) {
@@ -193,7 +193,7 @@ function _date_repeat_calc($rrule, $start, $end, $exceptions, $timezone, $additi
 
   elseif (empty($rrule['BYDAY'])) {
     // $current_day will keep track of where we are in the calculation.
-    $current_day = clone($start_date);
+    $current_day = clone $start_date;
     $finished = FALSE;
     $months = !empty($rrule['BYMONTH']) ? $rrule['BYMONTH'] : array();
     while (!$finished) {
@@ -275,7 +275,7 @@ function _date_repeat_calc($rrule, $start, $end, $exceptions, $timezone, $additi
     // need to be processed one month or year at a time.
     if (!empty($direction_days) && in_array($rrule['FREQ'], array('MONTHLY', 'YEARLY'))) {
       $finished = FALSE;
-      $current_day = clone($start_date);
+      $current_day = clone $start_date;
       while (!$finished) {
         foreach ($direction_days as $day) {
           // Find the BYDAY date in the current month.
@@ -314,7 +314,7 @@ function _date_repeat_calc($rrule, $start, $end, $exceptions, $timezone, $additi
     if (!empty($week_days) &&
       in_array($rrule['FREQ'], array('MONTHLY', 'WEEKLY', 'YEARLY'))) {
       $finished = FALSE;
-      $current_day = clone($start_date);
+      $current_day = clone $start_date;
       $format = $rrule['FREQ'] == 'YEARLY' ? 'Y' : 'n';
       $current_period = date_format($current_day, $format);
 
diff --git a/date_repeat_field/date_repeat_field.module b/date_repeat_field/date_repeat_field.module
index d4d4c90..042136f 100644
--- a/date_repeat_field/date_repeat_field.module
+++ b/date_repeat_field/date_repeat_field.module
@@ -503,7 +503,7 @@ function date_repeat_build_dates($rrule = NULL, $rrule_values = NULL, $field, $i
     $date_start = new DateObject($date, $timezone, DATE_FORMAT_DATETIME);
     $date_start->limitGranularity($field['settings']['granularity']);
     date_timezone_set($date_start, timezone_open($timezone_db));
-    $date_end = clone($date_start);
+    $date_end = clone $date_start;
     date_modify($date_end, '+' . $duration . ' seconds');
     $value[$delta] = array(
       'value' => date_format($date_start, date_type_format($field['type'])),
diff --git a/date_views/includes/date_views_plugin_pager.inc b/date_views/includes/date_views_plugin_pager.inc
index 5caca4e..39dda41 100644
--- a/date_views/includes/date_views_plugin_pager.inc
+++ b/date_views/includes/date_views_plugin_pager.inc
@@ -279,9 +279,9 @@ class date_views_plugin_pager extends views_plugin_pager {
           $this->view->date_info->next_date = $nextdate ? new DateObject($nextdate, NULL, $format) : NULL;
         }
         else {
-          $this->view->date_info->prev_date = clone($argument->min_date);
+          $this->view->date_info->prev_date = clone $argument->min_date;
           date_modify($this->view->date_info->prev_date, '-1 ' . $argument->date_handler->granularity);
-          $this->view->date_info->next_date = clone($argument->max_date);
+          $this->view->date_info->next_date = clone $argument->max_date;
           date_modify($this->view->date_info->next_date, '+1 ' . $argument->date_handler->granularity);
         }
         // Write the date_info properties that depend on the current value.