diff --git a/core/modules/migrate/src/Plugin/MigrationProviderInterface.php b/core/modules/migrate/src/Plugin/MigrationProviderInterface.php
index 2fe728c..aac4a17 100644
--- a/core/modules/migrate/src/Plugin/MigrationProviderInterface.php
+++ b/core/modules/migrate/src/Plugin/MigrationProviderInterface.php
@@ -10,7 +10,7 @@
   /**
    * Gets the plugin provider.
    *
-   * @return string|NULL
+   * @return string|null
    *   The plugin provider or NULL if a provider is not found. Note that for a
    *   source plugin the provider is expected to be the name of the module in
    *   the source database.
diff --git a/core/modules/migrate/src/Plugin/migrate/destination/Config.php b/core/modules/migrate/src/Plugin/migrate/destination/Config.php
index 55ea1a1..24a8e1f 100644
--- a/core/modules/migrate/src/Plugin/migrate/destination/Config.php
+++ b/core/modules/migrate/src/Plugin/migrate/destination/Config.php
@@ -155,7 +155,7 @@ public function rollback(array $destination_identifier) {
   public function getProvider() {
     $destination_module = parent::getProvider();
     // The migrate modules are not valid destination modules.
-    if (in_array($destination_module, ['migrate', 'migrate_drupal',  'migrate_drupal_ui'])) {
+    if (in_array($destination_module, ['migrate', 'migrate_drupal', 'migrate_drupal_ui'])) {
       $configuration_destination = (!empty($this->configuration['config_name'])) ? $this->configuration['config_name'] : NULL;
       if ($configuration_destination) {
         $destination_module = explode('.', $configuration_destination, 2)[0];