diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 73c6e395299..4bb980b5b76 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -24,3 +24,5 @@ abstract class UnitTestCase extends PHPUnit_Framework_TestCase{
 		parent::assertFalse((bool)$actual, $string);
 	}
 }
+
+OC_Hook::clear();