diff --git a/logout.php b/logout.php
index f4b085b..c6275e3 100644
--- a/logout.php
+++ b/logout.php
@@ -1,6 +1,18 @@
 <?php 
 session_start();
 $_SESSION['authenticated'] = false;
+ob_end_clean();
+ob_start(); 
+if (isset($_COOKIE['exchange'])) {
+        unset($_COOKIE['exchange[flo_id]']); 
+        setcookie('exchange[flo_id]', null, -1); 
+        unset($_COOKIE['exchange[session_id]']); 
+        setcookie('exchange[session_id]', null, -1); 
+        unset($_COOKIE['exchange[flo_pub_key]']); 
+        setcookie('exchange[flo_pub_key]', null, -1);
+        unset($_COOKIE['exchange']); 
+        setcookie('exchange', null, -1);
+     }
 session_destroy();
 header("Location: index.php");        // you can enter home page here ( Eg : header("Location: " ."http://www.krizna.com"); 
 ?>