diff --git a/tests/unit/Grav/Common/UtilsTest.php b/tests/unit/Grav/Common/UtilsTest.php
index 37e863714..6917b34c5 100644
--- a/tests/unit/Grav/Common/UtilsTest.php
+++ b/tests/unit/Grav/Common/UtilsTest.php
@@ -131,8 +131,8 @@ class UtilsTest extends \Codeception\TestCase\Test
 
         $objMerged = Utils::mergeObjects($obj1, $obj2);
 
-        self::assertObjectHasAttribute('test1', $objMerged);
-        self::assertObjectHasAttribute('test2', $objMerged);
+        self::arrayHasKey('test1', (array) $objMerged);
+        self::arrayHasKey('test2', (array) $objMerged);
     }
 
     public function testDateFormats(): void