diff --git a/app/Classes/Modules/Transactions/Services/GeneratesTransactionBillNumber.php b/app/Classes/Modules/Transactions/Services/GeneratesTransactionBillNumber.php
index 57b68277..6a49c941 100644
--- a/app/Classes/Modules/Transactions/Services/GeneratesTransactionBillNumber.php
+++ b/app/Classes/Modules/Transactions/Services/GeneratesTransactionBillNumber.php
@@ -35,7 +35,7 @@ class GeneratesTransactionBillNumber
         $attempt = 0;
         while ($attempt < 10) {  // Retry up to 10 times
             // $billNumber = $prefix . $date->format('Y') . $date->format('m') . '-' . intval(microtime(true));
-            $billNumber = $prefix . $date->format('Y') . $date->format('m') . '-' . mt_rand(1000000000, 9999999999);
+            $billNumber = $prefix . $date->format('Y') . $date->format('m') . '-' . mt_rand(1000000, 9999999);
             if (!$this->checksIfTransactionBillNumberExists->execute($billNumber)) {
                 return $billNumber;
             }