diff -u b/core/modules/migrate/src/Plugin/migrate/destination/EntityConfigBase.php b/core/modules/migrate/src/Plugin/migrate/destination/EntityConfigBase.php
--- b/core/modules/migrate/src/Plugin/migrate/destination/EntityConfigBase.php
+++ b/core/modules/migrate/src/Plugin/migrate/destination/EntityConfigBase.php
@@ -37,7 +37,7 @@
    * The configuration factory.
    *
    * @var \Drupal\Core\Config\ConfigFactoryInterface;
-     */
+   */
   protected $configFactory;
 
   /**
@@ -60,7 +60,7 @@
    * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
    *   The configuration factory.
    */
-  public function __construct(array $configuration, $plugin_id, $plugin_definition, MigrationInterface $migration, EntityStorageInterface $storage, array $bundles, LanguageManagerInterface  $language_manager, ConfigFactoryInterface $config_factory) {
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, MigrationInterface $migration, EntityStorageInterface $storage, array $bundles, LanguageManagerInterface $language_manager, ConfigFactoryInterface $config_factory) {
     parent::__construct($configuration, $plugin_id, $plugin_definition, $migration, $storage, $bundles);
     $this->languageManager = $language_manager;
     $this->configFactory = $config_factory;
@@ -109,15 +109,12 @@
     if (count($ids) > 1) {
       // This can only be a config entity, content entities have their ID key
       // and that's it.
-      $return = array();
+      $return = [];
       foreach ($id_keys as $id_key) {
-        if ($this->isTranslationDestination()) {
-          if ($id_key == 'langcode') {
-            $return[] = $row->getDestinationProperty($id_key);
-          }
-          else {
-            $return[] = $entity->get($id_key);
-          }
+        if (($this->isTranslationDestination()) && ($id_key == 'langcode')) {
+          // Config entities do not have a language property, get the language
+          // code from the destination.
+          $return[] = $row->getDestinationProperty($id_key);
         }
         else {
           $return[] = $entity->get($id_key);
@@ -125,7 +122,7 @@
       }
       return $return;
     }
-    return array($entity->id());
+    return [$entity->id()];
   }
 
   /**
@@ -162,7 +159,7 @@
     // This is a translation if the language in the active config matches the
     // language of this row.
     $translation = FALSE;
-    if ($row->hasDestinationProperty('langcode') && $this->languageManager instanceof ConfigurableLanguageManager)  {
+    if ($row->hasDestinationProperty('langcode') && $this->languageManager instanceof ConfigurableLanguageManager) {
       $config = $entity->getConfigDependencyName();
       $langcode = $this->configFactory->get('langcode');
       if ($langcode != $row->getDestinationProperty('langcode')) {