diff --git a/tests/unit/Util/ConfigurationTest.php b/tests/unit/Util/ConfigurationTest.php
index 19c1526f93b..ce2d124fd24 100644
--- a/tests/unit/Util/ConfigurationTest.php
+++ b/tests/unit/Util/ConfigurationTest.php
@@ -451,8 +451,8 @@ protected function assertConfigurationEquals(Configuration $expectedConfiguratio
         );
 
         $this->assertEquals(
-            $expectedConfiguration->getTestSuiteConfiguration(),
-            $actualConfiguration->getTestSuiteConfiguration()
+            $expectedConfiguration->getTestSuiteConfiguration()->tests(),
+            $actualConfiguration->getTestSuiteConfiguration()->tests()
         );
     }