diff --git a/includes/smarty.php b/includes/smarty.php
index dafd3fc..0fd112e 100644
--- a/includes/smarty.php
+++ b/includes/smarty.php
@@ -86,7 +86,7 @@ if (!isset($_SESSION['errors']))
   $_SESSION['errors']=array();
 function add_error($error) {
   // If more than one arguments passed, format error message using sprintf
-  if (func_num_args() > 2) {
+  if (func_num_args() > 1) {
     $error = call_user_func_array(
       'sprintf',
       array_merge(array($error), array_slice(func_get_args(), 1))
@@ -99,7 +99,7 @@ if (!isset($_SESSION['messages']))
   $_SESSION['messages']=array();
 function add_message($message) {
   // If more than one arguments passed, format message using sprintf
-  if (func_num_args() > 2) {
+  if (func_num_args() > 1) {
     $message = call_user_func_array(
       'sprintf',
       array_merge(array($message), array_slice(func_get_args(), 1))