diff --git a/common/framework/session.php b/common/framework/session.php
index e52df455b..bcc5376e0 100644
--- a/common/framework/session.php
+++ b/common/framework/session.php
@@ -447,11 +447,13 @@ class Session
 	 */
 	public static function destroy()
 	{
-		unset($_SESSION['RHYMIX']);
+		$_SESSION = array();
 		self::$_started = false;
+		self::$_autologin_key = false;
 		self::$_member_info = false;
 		self::_setKeys();
 		self::destroyAutologinKeys();
+		@session_write_close();
 		@session_destroy();
 		return true;
 	}
diff --git a/common/legacy.php b/common/legacy.php
index 9db3dc473..b2c92e581 100644
--- a/common/legacy.php
+++ b/common/legacy.php
@@ -187,11 +187,12 @@ function getNextSequence()
  */
 function setUserSequence($seq)
 {
-	if(!isset($_SESSION['seq']))
+	if (!isset($_SESSION['seq']) || !is_array($_SESSION['seq']))
 	{
 		$_SESSION['seq'] = array();
 	}
-	$_SESSION['seq'][] = $seq;
+	$seq = intval($seq);
+	$_SESSION['seq'][$seq] = $seq;
 }
 
 /**
@@ -202,6 +203,7 @@ function setUserSequence($seq)
  */
 function checkUserSequence($seq)
 {
+	$seq = intval($seq);
 	return isset($_SESSION['seq']) && in_array($seq, $_SESSION['seq']);
 }
 
diff --git a/modules/file/file.controller.php b/modules/file/file.controller.php
index 6f2ddf9c1..7ec1cf5bf 100644
--- a/modules/file/file.controller.php
+++ b/modules/file/file.controller.php
@@ -699,6 +699,10 @@ class fileController extends file
 	 */
 	function setUploadInfo($editor_sequence, $upload_target_srl=0)
 	{
+		if(!isset($_SESSION['upload_info']) || !is_array($_SESSION['upload_info']))
+		{
+			$_SESSION['upload_info'] = array();
+		}
 		if(!isset($_SESSION['upload_info'][$editor_sequence]))
 		{
 			$_SESSION['upload_info'][$editor_sequence] = new stdClass();
diff --git a/modules/member/member.controller.php b/modules/member/member.controller.php
index 1f7767c10..6a24fb241 100644
--- a/modules/member/member.controller.php
+++ b/modules/member/member.controller.php
@@ -2637,14 +2637,9 @@ class memberController extends member
 	 */
 	function destroySessionInfo()
 	{
-		if(!$_SESSION || !is_array($_SESSION)) return;
-
-		$memberInfo = Context::get('logged_info');
-		$memberSrl = $memberInfo->member_srl;
-
-		foreach($_SESSION as $key => $val)
+		if (!Rhymix\Framework\Session::isStarted())
 		{
-			$_SESSION[$key] = '';
+			return;
 		}
 
 		Rhymix\Framework\Session::destroy();
diff --git a/tests/unit/framework/SessionTest.php b/tests/unit/framework/SessionTest.php
index 806da9ee3..391af3244 100644
--- a/tests/unit/framework/SessionTest.php
+++ b/tests/unit/framework/SessionTest.php
@@ -183,8 +183,8 @@ class SessionTest extends \Codeception\TestCase\Test
 		
 		Rhymix\Framework\Session::logout();
 		$this->assertFalse(isset($_SESSION['RHYMIX']['login']));
-		$this->assertFalse($_SESSION['member_srl']);
-		$this->assertFalse($_SESSION['is_logged']);
+		$this->assertFalse(isset($_SESSION['member_srl']));
+		$this->assertFalse(isset($_SESSION['is_logged']));
 		
 		Rhymix\Framework\Session::close();
 	}