diff --git a/www-api/app/Controllers/WrenchAccount.php b/www-api/app/Controllers/WrenchAccount.php
index b479fc2e..2b1bd45b 100644
--- a/www-api/app/Controllers/WrenchAccount.php
+++ b/www-api/app/Controllers/WrenchAccount.php
@@ -55,7 +55,7 @@ class WrenchAccount extends BaseController
         $in["action_path"] = 100;
         $in["loc"] = $_SERVER["REMOTE_ADDR"];
         if (isset($in["path"]) && $in["path"] == 'promoref'){
-            $in["refer_link"] = str_replace('', "REFPROMO-", $in["refer_link"]);
+            $in["refer_link"] = str_replace('REFPROMO-', "", $in["refer_link"]);
             $in["action_path"] = 200;
         }
         $ret = $this->wrenchboard->wrenchboard_api($in, $out);