diff --git a/Modules/Internal/Http/Controllers/Api/CorporateController.php b/Modules/Internal/Http/Controllers/Api/CorporateController.php
index d5f46f4e..c095f8a4 100755
--- a/Modules/Internal/Http/Controllers/Api/CorporateController.php
+++ b/Modules/Internal/Http/Controllers/Api/CorporateController.php
@@ -80,7 +80,7 @@ class CorporateController extends Controller
     {
        
         $request->validate([
-            'code' => 'required|regex:/^[a-zA-Z0-9]+$/',
+            'code' => 'required|regex:/^[a-zA-Z0-9_]+$/',
             'name' => 'required',
             'payor_id' => 'required',
             // 'logo' => 'required',