diff --git a/app/Http/Controllers/AccountController.php b/app/Http/Controllers/AccountController.php
index d03b13fa9e72..48ace501f417 100644
--- a/app/Http/Controllers/AccountController.php
+++ b/app/Http/Controllers/AccountController.php
@@ -704,7 +704,9 @@ class AccountController extends BaseController
                     $account->quote_number_prefix = null;
                 }
 
-                if (!$account->share_counter && $account->invoice_number_prefix == $account->quote_number_prefix) {
+                if (!$account->share_counter
+                        && $account->invoice_number_prefix == $account->quote_number_prefix
+                        && $account->invoice_number_pattern == $account->quote_number_pattern) {
                     Session::flash('error', trans('texts.invalid_counter'));
 
                     return Redirect::to('settings/'.ACCOUNT_INVOICE_SETTINGS)->withInput();