diff --git a/tests/Models/NullAccountExternalTest.php b/tests/Models/NullAccountExternalTest.php
index 851cac1..2d6f5c5 100644
--- a/tests/Models/NullAccountExternalTest.php
+++ b/tests/Models/NullAccountExternalTest.php
@@ -37,7 +37,7 @@ final class NullAccountExternalTest extends \PHPUnit\Framework\TestCase
     public function testId() : void
     {
         $null = new NullAccountExternal(2);
-        self::assertEquals(2, $null->getId());
+        self::assertEquals(2, $null->id);
     }
 
     /**
diff --git a/tests/Models/NullDataChangeTest.php b/tests/Models/NullDataChangeTest.php
index e72ccff..a6dc2fc 100644
--- a/tests/Models/NullDataChangeTest.php
+++ b/tests/Models/NullDataChangeTest.php
@@ -37,7 +37,7 @@ final class NullDataChangeTest extends \PHPUnit\Framework\TestCase
     public function testId() : void
     {
         $null = new NullDataChange(2);
-        self::assertEquals(2, $null->getId());
+        self::assertEquals(2, $null->id);
     }
 
     /**