diff --git a/core/lib/Drupal/Core/Field/WidgetBase.php b/core/lib/Drupal/Core/Field/WidgetBase.php
index c99dee5..9b25bdc 100644
--- a/core/lib/Drupal/Core/Field/WidgetBase.php
+++ b/core/lib/Drupal/Core/Field/WidgetBase.php
@@ -149,6 +149,11 @@
     $cardinality = $this->fieldDefinition->getFieldStorageDefinition()->getCardinality();
     $parents = $form['#parents'];
 
+    if ($cardinality == FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED && !$form_state->isProgrammed()) {
+      $id_prefix = implode('-', array_merge($parents, array($field_name)));
+      $wrapper_id = Html::getUniqueId($id_prefix . '-add-more-wrapper');
+    }
+
     // Determine the number of widgets to display.
     switch ($cardinality) {
       case FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED:
@@ -207,6 +212,20 @@
             '#default_value' => $items[$delta]->_weight ?: $delta,
             '#weight' => 100,
           );
+
+          $element['remove_item'] = array(
+            '#type' => 'submit',
+            '#value' => $this->t('Remove item'),
+            '#submit' => array(array(get_class($this), 'removeItemSubmit')),
+            '#ajax' => array(
+              'callback' => array(get_class($this), 'removeItemAjax'),
+              'wrapper' => $wrapper_id,
+              'effect' => 'fade',
+            ),
+            '#name' => implode('_', array_merge($parents, array($field_name, $delta, 'remove_item'))),
+            '#attributes' => array('class' => array('field-remove-item-submit')),
+            '#limit_validation_errors' => array(array_merge($parents, array($field_name))),
+            );
         }
 
         $elements[$delta] = $element;
@@ -227,8 +246,6 @@
 
       // Add 'add more' button, if not working with a programmed form.
       if ($cardinality == FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED && !$form_state->isProgrammed()) {
-        $id_prefix = implode('-', array_merge($parents, array($field_name)));
-        $wrapper_id = Html::getUniqueId($id_prefix . '-add-more-wrapper');
         $elements['#prefix'] = '<div id="' . $wrapper_id . '">';
         $elements['#suffix'] = '</div>';
 
@@ -268,6 +285,41 @@
     return $element;
   }
 
+  public static function removeItemSubmit(array $form, FormStateInterface $form_state) {
+    $button = $form_state->getTriggeringElement();
+
+    // Go one level up in the form, to the widgets container.
+    $element = NestedArray::getValue($form, array_slice($button['#array_parents'], 0, -1));
+    $container_element = NestedArray::getValue($form, array_slice($button['#array_parents'], 0, -2));
+    $field_name = $container_element['#field_name'];
+    $field_parents = $element['#field_parents'];
+    $delta = $element['#delta'];
+    $field_values = &$form_state->getValue($container_element['#parents']);
+    $field_input = &NestedArray::getValue($form_state->getUserInput(), $container_element['#parents']);
+    $field_state = static::getWidgetState($field_parents, $field_name, $form_state);
+
+    for ($i = $delta; $i < $field_state['items_count']; $i++) {
+      $field_values[$i] = $field_values[$i+1];
+      $field_input[$i] = $field_input[$i+1];
+    }
+    unset($field_values[$field_state['items_count']]);
+    unset($field_input[$field_state['items_count']]);
+
+    // Increment the items count.
+    $field_state['items_count']--;
+    static::setWidgetState($field_parents, $field_name, $form_state, $field_state);
+
+    $form_state->setRebuild();
+  }
+
+  public static function removeItemAjax(array $form, FormStateInterface $form_state) {
+    $button = $form_state->getTriggeringElement();
+
+    // Go two levels up in the form, to the widgets container.
+    $element = NestedArray::getValue($form, array_slice($button['#array_parents'], 0, -2));
+
+    return $element;
+  }
   /**
    * Submission handler for the "Add another item" button.
    */