diff --git a/includes/smarty.php b/includes/smarty.php
index 0fd112e..e076990 100644
--- a/includes/smarty.php
+++ b/includes/smarty.php
@@ -194,6 +194,14 @@ $ajax=false;
 function fatal_error($error) {
   global $smarty, $ajax, $api_mode;
 
+  // If more than one arguments passed, format error message using sprintf
+  if (func_num_args() > 1) {
+    $error = call_user_func_array(
+      'sprintf',
+      array_merge(array($error), array_slice(func_get_args(), 1))
+    );
+  }
+
   if (php_sapi_name() == "cli")
     die("FATAL ERROR : $error\n");