diff --git a/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeDatelistWidget.php b/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeDatelistWidget.php
index 598b47a..6b38584 100644
--- a/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeDatelistWidget.php
+++ b/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeDatelistWidget.php
@@ -40,8 +40,15 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
     $element = parent::formElement($items, $delta, $element, $form, $form_state);
 
     $date_order = $this->getSetting('date_order');
-    $time_type = $this->getSetting('time_type');
-    $increment = $this->getSetting('increment');
+
+    if ($this->getFieldSetting('datetime_type') == 'datetime') {
+      $time_type = $this->getSetting('time_type');
+      $increment = $this->getSetting('increment');
+    }
+    else {
+      $time_type = '';
+      $increment = '';
+    }
 
     // Set up the date part order array.
     switch ($date_order) {
@@ -134,16 +141,10 @@ function settingsForm(array $form, FormStateInterface $form_state) {
   public function settingsSummary() {
     $summary = array();
 
-    $summary[] = t('Date part order: @order',
-      ['@order' => $this->getSetting('date_order')]
-    );
+    $summary[] = t('Date part order: !order', array('!order' => $this->getSetting('date_order')));
     if ($this->getFieldSetting('datetime_type') == 'datetime') {
-      $summary[] = t('Time type: @time_type',
-        ['@time_type' => $this->getSetting('time_type')]
-      );
-      $summary[] = t('Time increments: @increment',
-        ['@increment' => $this->getSetting('increment')]
-      );
+      $summary[] = t('Time type: !time_type', array('!time_type' => $this->getSetting('time_type')));
+      $summary[] = t('Time increments: !increment', array('!increment' => $this->getSetting('increment')));
     }
 
     return $summary;