diff --git a/services/nginx/app/routes/authRoute.php b/services/nginx/app/routes/authRoute.php
index f5e8ef6f..562c7d34 100644
--- a/services/nginx/app/routes/authRoute.php
+++ b/services/nginx/app/routes/authRoute.php
@@ -416,7 +416,7 @@ class authRoute
 
             if ($matchingEconomicCustomer !== null) {
                 if ($localUserExists) {
-                    $response->error('Company phone number already registered', 400);
+                    $response->error('Company phone number already registered 01', 400);
                 }
 
                 $this->bootstrapLocalCustomerOrFail($companyPhone);
@@ -441,7 +441,7 @@ class authRoute
             }
 
             if ($localUserExists) {
-                $response->error('Company phone number already registered', 400);
+                $response->error('Company phone number already registered 02', 400);
             }
 
             // Get the CVR company information used for the e-conomic customer payload.
@@ -765,7 +765,7 @@ class authRoute
     private function localCustomerNumberExists(int $customerNumber): bool
     {
         $rows = (new users_o())->getFieldsWhere([
-            'customer_number' => (string)$customerNumber,
+            'customer_number' => (int)$customerNumber,
         ], ['id']);
 
         return count($rows) > 0;