diff --git a/test/core/iTopConfigParserTest.php b/test/core/iTopConfigParserTest.php
index 0461f6391..ee393a1b2 100644
--- a/test/core/iTopConfigParserTest.php
+++ b/test/core/iTopConfigParserTest.php
@@ -10,6 +10,7 @@ use Combodo\iTop\Test\UnitTest\ItopTestCase;
 class iTopConfigParserTest extends ItopTestCase
 {
 	private $conf_exists;
+	/** @var false|string backup of the original config file */
 	private $tmpSavePath;
 	private $sConfigPath;
 
@@ -20,7 +21,8 @@ class iTopConfigParserTest extends ItopTestCase
 
 		clearstatcache();
 		$this->sConfigPath = utils::GetConfigFilePath();
-		$this->tmpSavePath = tempnam( '/tmp/', 'config-itop');
+		// saving the current config so we can restore it at the end !
+		$this->tmpSavePath = tempnam(sys_get_temp_dir(), 'config-itop');
 
 		$this->conf_exists = is_file($this->sConfigPath);
 		if ($this->conf_exists)
@@ -32,9 +34,10 @@ class iTopConfigParserTest extends ItopTestCase
 
 	public function tearDown()
 	{
-		parent::tearDown(); // TODO: Change the autogenerated stub
-		if ($this->conf_exists)
-		{
+		parent::tearDown();
+		if ($this->conf_exists) {
+			// restoring config that was in place before the test
+			@chmod($this->sConfigPath, 0770); // RWX for owner and group, nothing for others : else we will have permission denied !
 			rename($this->tmpSavePath, $this->sConfigPath);
 		}
 	}
@@ -154,8 +157,8 @@ class iTopConfigParserTest extends ItopTestCase
 	 */
 	public function testConfigWriteToFile()
 	{
-		$tmpConfigFileBeforePath = tempnam( '/tmp/', 'config-itop');
-		$tmpConfigFileAfterPath = tempnam( '/tmp/', 'config-itop');
+		$tmpConfigFileBeforePath = tempnam(sys_get_temp_dir(), 'config-itop');
+		$tmpConfigFileAfterPath = tempnam(sys_get_temp_dir(), 'config-itop');
 
 		//create new config file
 		$sConfigFile = utils::GetConfig()->GetLoadedFile();