diff --git pay/includes/handlers/pay.inc pay/includes/handlers/pay.inc
index 8571dc6..437bf56 100644
--- pay/includes/handlers/pay.inc
+++ pay/includes/handlers/pay.inc
@@ -66,8 +66,8 @@ class pay {
     $this->notes = filter_xss($val);
   }
 
-  function set_identifer($val = NULL) {
-    $this->identifer = filter_xss($val);
+  function set_identifier($val = NULL) {
+    $this->identifier = filter_xss($val);
   }
 
   function set_status($status = 1) {