diff --git a/system/devices/Radius.php b/system/devices/Radius.php
index 0fa404a2..2544c7c5 100644
--- a/system/devices/Radius.php
+++ b/system/devices/Radius.php
@@ -92,7 +92,7 @@ class Radius
         $this->customerDeactivate($customer['username'], true);
     }
 
-    public function change_username($from, $to)
+    public function change_username($plan, $from, $to)
     {
         $c = $this->getTableCustomer()->where_equal('username', $from)->findMany();
         if ($c) {
diff --git a/system/devices/RadiusRest.php b/system/devices/RadiusRest.php
index c1095ef6..5e3fb95b 100644
--- a/system/devices/RadiusRest.php
+++ b/system/devices/RadiusRest.php
@@ -28,7 +28,7 @@ class RadiusRest {
     }
 
     // customer change username
-    public function change_username($from, $to)
+    public function change_username($plan, $from, $to)
     {
     }
 
diff --git a/system/devices/readme.md b/system/devices/readme.md
index 0a0022e8..c47cbbd6 100644
--- a/system/devices/readme.md
+++ b/system/devices/readme.md
@@ -34,7 +34,7 @@ class FileName {
     }
 
     // customer change username
-    public function change_username($from, $to)
+    public function change_username($plan, $from, $to)
     {
     }