diff --git a/tests/Hamcrest/AbstractMatcherTest.php b/tests/Hamcrest/AbstractMatcherTest.php
index e773d1cec..6c52c0e5d 100644
--- a/tests/Hamcrest/AbstractMatcherTest.php
+++ b/tests/Hamcrest/AbstractMatcherTest.php
@@ -4,7 +4,7 @@
 class UnknownType {
 }
 
-abstract class AbstractMatcherTest extends \PhpUnit_Framework_TestCase
+abstract class AbstractMatcherTest extends \PHPUnit_Framework_TestCase
 {
 
     const ARGUMENT_IGNORED = "ignored";