diff --git a/setup/sequencers/StepSequencer.php b/setup/sequencers/StepSequencer.php
index 5f3d5664e..efe1bbdd4 100644
--- a/setup/sequencers/StepSequencer.php
+++ b/setup/sequencers/StepSequencer.php
@@ -38,9 +38,10 @@ abstract class StepSequencer
 	{
 		if (is_null($oRunTimeEnvironment)) {
 			$sEnvironment = $oParams->Get('target_env', 'production');
-			$oRunTimeEnvironment = new RunTimeEnvironment($sEnvironment, false);
+			$this->oRunTimeEnvironment = new RunTimeEnvironment($sEnvironment, false);
+		} else {
+			$this->oRunTimeEnvironment = $oRunTimeEnvironment;
 		}
-		$this->oRunTimeEnvironment = $oRunTimeEnvironment;
 
 		$this->oParams = $oParams;
 
diff --git a/tests/php-unit-tests/src/Service/UnitTestRunTimeEnvironment.php b/tests/php-unit-tests/src/Service/UnitTestRunTimeEnvironment.php
index 2c12e56a0..4cd3b9d90 100644
--- a/tests/php-unit-tests/src/Service/UnitTestRunTimeEnvironment.php
+++ b/tests/php-unit-tests/src/Service/UnitTestRunTimeEnvironment.php
@@ -55,14 +55,14 @@ class UnitTestRunTimeEnvironment extends RunTimeEnvironment
 			SetupUtils::rrmdir($sDestModulesDir);
 		}
 
-		SetupUtils::copydir(APPROOT.'/data/'.$sSourceEnv.'-modules', $sDestModulesDir, $bUseSymLinks);
+		SetupUtils::copydir(APPROOT.'/data/'.$sSourceEnv.'-modules', $sDestModulesDir, (true === $bUseSymLinks));
 
 		if ($this->bUseAdditionalFeatures) {
 			foreach ($this->GetExtensionFoldersToAdd() as $sExtensionCode => $sFolderPath) {
 				\SetupLog::Info("ExtensionFoldersToAdd: $sExtensionCode => $sFolderPath");
 				$sFolderName = basename($sFolderPath);
 				@mkdir($sDestModulesDir.DIRECTORY_SEPARATOR.$sFolderName);
-				SetupUtils::copydir($sFolderPath, $sDestModulesDir.DIRECTORY_SEPARATOR.$sFolderName, $bUseSymLinks);
+				SetupUtils::copydir($sFolderPath, $sDestModulesDir.DIRECTORY_SEPARATOR.$sFolderName, (true === $bUseSymLinks));
 			}
 		}
 
diff --git a/tests/php-unit-tests/unitary-tests/setup/ApplicationInstallSequencerFake.php b/tests/php-unit-tests/unitary-tests/setup/ApplicationInstallSequencerFake.php
index b6e578942..f0d5bf80e 100644
--- a/tests/php-unit-tests/unitary-tests/setup/ApplicationInstallSequencerFake.php
+++ b/tests/php-unit-tests/unitary-tests/setup/ApplicationInstallSequencerFake.php
@@ -4,7 +4,7 @@ class ApplicationInstallSequencerFake extends ApplicationInstallSequencer
 {
 	public function __construct(Parameters $oParams)
 	{
-		$this->oParams = $oParams;
+		parent::__construct($oParams);
 	}
 
 	protected function DoLogParameters($sPrefix = 'install-', $sOperation = '')
@@ -23,10 +23,7 @@ class ApplicationInstallSequencerFake extends ApplicationInstallSequencer
 	{
 
 	}
-	protected function DoUpdateDBSchema($aSelectedModules)
-	{
 
-	}
 	protected function AfterDBCreate(
 		$aAdminParams,
 		$aSelectedModules
diff --git a/tests/php-unit-tests/unitary-tests/setup/DataAuditSequencerFake.php b/tests/php-unit-tests/unitary-tests/setup/DataAuditSequencerFake.php
index d024cd6c8..8bc28625c 100644
--- a/tests/php-unit-tests/unitary-tests/setup/DataAuditSequencerFake.php
+++ b/tests/php-unit-tests/unitary-tests/setup/DataAuditSequencerFake.php
@@ -4,7 +4,7 @@ class DataAuditSequencerFake extends DataAuditSequencer
 {
 	public function __construct(Parameters $oParams)
 	{
-		$this->oParams = $oParams;
+		paret::__construct($oParams);
 	}
 
 	protected function DoCopy($aCopies)
diff --git a/tests/php-unit-tests/unitary-tests/setup/StepSequencerTest.php b/tests/php-unit-tests/unitary-tests/setup/StepSequencerTest.php
index cb4d5257f..1733e161a 100644
--- a/tests/php-unit-tests/unitary-tests/setup/StepSequencerTest.php
+++ b/tests/php-unit-tests/unitary-tests/setup/StepSequencerTest.php
@@ -20,6 +20,7 @@ class StepSequencerTest extends ItopTestCase
 		$this->RequireOnceItopFile('/setup/sequencers/DataAuditSequencer.php');
 		$this->RequireOnceItopFile('/setup/parameters.class.inc.php');
 		$this->RequireOnceItopFile('/setup/setuputils.class.inc.php');
+		$this->RequireOnceItopFile('/setup/runtimeenv.class.inc.php');
 		require_once __DIR__.'/ApplicationInstallSequencerFake.php';
 		require_once __DIR__.'/DataAuditSequencerFake.php';
 	}
@@ -27,7 +28,23 @@ class StepSequencerTest extends ItopTestCase
 	public function testApplicationInstallSequencer()
 	{
 		$oParams = new PHPParameters();
-		$oParams->LoadFromHash([]);
+		$aParams = [
+			'mode' => 'install',
+			'database' => [
+				'server' => 'server',
+				'user' => 'user',
+				'pwd' => 'pwd',
+				'name' => 'name',
+				'prefix' => 'prefix',
+				'db_tls_enabled' => 'db_tls_enabled',
+				'db_tls_ca' => 'db_tls_ca',
+				],
+			'application_path' => '',
+			'language' => '',
+			'graphviz_path' => '',
+			'source_dir' => '',
+		];
+		$oParams->LoadFromHash($aParams);
 
 		$oInstallSequencer = new ApplicationInstallSequencerFake($oParams);
 		$oInstallSequencer->ExecuteAllSteps();