diff --git a/tests/lib/SimpleSAML/ConfigurationTest.php b/tests/lib/SimpleSAML/ConfigurationTest.php
index 035c1b0117763a04fde6377cf3b580461f2a82ee..fced577efb64dd1cf96700502e4939de9d402276 100644
--- a/tests/lib/SimpleSAML/ConfigurationTest.php
+++ b/tests/lib/SimpleSAML/ConfigurationTest.php
@@ -3,7 +3,7 @@
 /**
  * Tests for SimpleSAML_Configuration
  */
-class Test_SimpleSAML_Configuration extends PHPUnit_Framework_TestCase
+class Test_SimpleSAML_Configuration extends SimpleSAML\Test\Utils\ClearStateTestCase
 {
 
     /**