diff --git a/includes/phone.element.inc b/includes/phone.element.inc
index 14bdaa9..487a4d5 100644
--- a/includes/phone.element.inc
+++ b/includes/phone.element.inc
@@ -67,8 +67,28 @@ function phone_element_process($element, &$form_state, $form) {
 
   $settings = $element['#phone_settings'];
 
+  if (empty($element['comment'])) {
+    $element['comment'] = array();
+  }
+
+  if (empty($element['number'])) {
+    $element['number'] = array();
+  }
+
+  if (empty($element['countrycode'])) {
+    $element['countrycode'] = array();
+  }
+
+  if (empty($element['country_code_markup'])) {
+    $element['country_code_markup'] = array();
+  }
+
+  if (empty($element['extension'])) {
+    $element['extension'] = array();
+  }
+
   if ($settings['enable_comment'] && !empty($settings['comment_allowed_values'])) {
-    $element['comment'] = array(
+    $element['comment'] = $element['comment'] + array(
       '#type' => 'select',
       '#options' => $settings['comment_allowed_values'],
       '#weight' => $settings['comment_allowed_values_position'] == 'after' ? 5 : -5,
@@ -77,13 +97,13 @@ function phone_element_process($element, &$form_state, $form) {
     );
   }
   else {
-    $element['comment'] = array(
+    $element['comment'] = $element['comment'] + array(
       '#type' => 'hidden',
       '#value' => isset($item['comment']) ? $item['comment'] : NULL,
     );
   }
 
-  $element['number'] = array(
+  $element['number'] = $element['number'] + array(
     '#type' => !empty($settings['use_tel_input']) ? 'phone_tel' : 'textfield',
     '#maxlength' => $settings['number_size'],
     '#size' => $settings['number_size'],
@@ -98,12 +118,12 @@ function phone_element_process($element, &$form_state, $form) {
   if (!$country_options['all_country_codes'] && count($country_selection) == 1) {
     $countrycode = reset($country_selection);
     $country = phone_countries($countrycode);
-    $element['countrycode'] = array(
+    $element['countrycode'] = $element['countrycode'] + array(
       '#type' => 'hidden',
       '#value' => $countrycode,
     );
     if (!$country_options['country_codes']['hide_single_cc']) {
-      $element['country_code_markup'] = array(
+      $element['country_code_markup'] = $element['country_code_markup'] + array(
         '#type' => 'item',
         '#markup' => $value = $country,
         '#weight' => ($country_options['country_code_position'] == 'after' ? 1 : -1),
@@ -111,7 +131,7 @@ function phone_element_process($element, &$form_state, $form) {
     }
   }
   else {
-    $element['countrycode'] = array(
+    $element['countrycode'] = $element['countrycode'] + array(
       '#type' => 'select',
       '#options' => phone_countries($country_options['all_country_codes'] ? NULL : $country_selection),
       '#weight' => ($country_options['country_code_position'] == 'after' ? 1 : -1),
@@ -126,7 +146,7 @@ function phone_element_process($element, &$form_state, $form) {
   }
 
   if ($settings['enable_extension']) {
-    $element['extension'] = array(
+    $element['extension'] = $element['extension'] + array(
       '#type' => 'textfield',
       '#maxlength' => $settings['extension_size'],
       '#size' => $settings['extension_size'],
@@ -137,7 +157,7 @@ function phone_element_process($element, &$form_state, $form) {
     );
   }
   else {
-    $element['extension'] = array(
+    $element['extension'] = $element['extension'] + array(
       '#type' => 'hidden',
       '#value' => isset($item['extension']) ? $item['extension'] : NULL,
     );