diff --git a/src/FuzeWorks/Security.php b/src/FuzeWorks/Security.php
index 99be132..574daf5 100644
--- a/src/FuzeWorks/Security.php
+++ b/src/FuzeWorks/Security.php
@@ -320,7 +320,7 @@ class Security {
      * @see		Security::$_csrf_hash
      * @return 	string	CSRF hash
      */
-    public function get_csrf_hash(): string
+    public function get_csrf_hash(): ?string
     {
         return $this->_csrf_hash;
     }