diff --git a/tools/smarty/plugins/shared.mb_str_replace.php b/tools/smarty/plugins/shared.mb_str_replace.php
index ecafeb74a..1a7ae2174 100755
--- a/tools/smarty/plugins/shared.mb_str_replace.php
+++ b/tools/smarty/plugins/shared.mb_str_replace.php
@@ -44,7 +44,11 @@ if (!function_exists('smarty_mb_str_replace')) {
                 }
             }
         } else {
-            $parts = mb_split(preg_quote($search), $subject);
+            if (function_exists('mb_split')) {
+                $parts = mb_split(preg_quote($search), $subject);
+            } else {
+                $parts = split(preg_quote($search), $subject);
+            }
             $count = count($parts) - 1;
             $subject = implode($replace, $parts);
         }