diff --git a/system/core/Security.php b/system/core/Security.php
index 2fbc5b3..d7c8271 100644
--- a/system/core/Security.php
+++ b/system/core/Security.php
@@ -161,7 +161,7 @@
 		}
 
 		// Do the tokens exist in both the _POST and _COOKIE arrays?
-		if ( ! isset($_POST[$this->_csrf_token_name]) OR ! isset($_COOKIE[$this->_csrf_cookie_name])
+		if ( ! isset($_POST[$this->_csrf_token_name], $_COOKIE[$this->_csrf_cookie_name])
 			OR $_POST[$this->_csrf_token_name] !== $_COOKIE[$this->_csrf_cookie_name]) // Do the tokens match?
 		{
 			$this->csrf_show_error();