diff --git a/core/modules/migrate/src/Entity/Migration.php b/core/modules/migrate/src/Entity/Migration.php
index 4bc155a..f4d51ce 100644
--- a/core/modules/migrate/src/Entity/Migration.php
+++ b/core/modules/migrate/src/Entity/Migration.php
@@ -92,7 +92,7 @@ class Migration extends ConfigEntityBase implements MigrationInterface, Requirem
    *
    * @var array
    */
-  protected $processPlugins = array();
+  protected $processPlugins = [];
 
   /**
    * The destination configuration, with at least a 'plugin' key.
@@ -117,7 +117,7 @@ class Migration extends ConfigEntityBase implements MigrationInterface, Requirem
    *
    * @var string
    */
-  protected $idMap = array();
+  protected $idMap = [];
 
   /**
    * The identifier map.
@@ -409,7 +409,7 @@ public function getSystemOfRecord() {
    * {@inheritdoc}
    */
   public function setSystemOfRecord($system_of_record) {
-    if ($system_of_record != self::SOURCE && $system_of_record != self::DESTINATION) {
+    if ($system_of_record !== self::SOURCE && $system_of_record !== self::DESTINATION) {
       throw new \InvalidArgumentException(String::format("The system-of-record '@systemofrecord' is not valid.", [
         '@systemofrecord' => $system_of_record,
       ]));