diff --git a/test/core/CMDBSource/TransactionsTest.php b/test/core/CMDBSource/TransactionsTest.php
index 0f2d98866..227ebe7d7 100644
--- a/test/core/CMDBSource/TransactionsTest.php
+++ b/test/core/CMDBSource/TransactionsTest.php
@@ -13,8 +13,6 @@ use MetaModel;
 
 /**
  * @runTestsInSeparateProcesses
- * @preserveGlobalState disabled
- * @backupGlobals disabled
  * 
  * @group itopRequestMgmt
  * Class TransactionsTest
diff --git a/test/core/ExpressionTest.php b/test/core/ExpressionTest.php
index 2ceef3944..1ba63daa5 100644
--- a/test/core/ExpressionTest.php
+++ b/test/core/ExpressionTest.php
@@ -5,6 +5,9 @@ namespace Combodo\iTop\Test\UnitTest\Core;
 use Combodo\iTop\Test\UnitTest\ItopDataTestCase;
 use Expression;
 
+/**
+ * @runTestsInSeparateProcesses
+ */
 class ExpressionTest extends ItopDataTestCase
 {
 	const USE_TRANSACTION = false;