diff --git a/tests/Unit/InvoiceModelTest.php b/tests/Unit/InvoiceModelTest.php
index c71eef8..a3e7601 100644
--- a/tests/Unit/InvoiceModelTest.php
+++ b/tests/Unit/InvoiceModelTest.php
@@ -103,7 +103,7 @@ public function itemsRelationship(): void
     protected function makeInvoice(array $data = []): Invoice
     {
         return Invoice::query()
-                      ->create(array_merge(['gateway' => Payir::class, 'amount' => rand(10, 5000)/10], $data))
+                      ->create(array_merge(['gateway' => Payir::class, 'amount' => rand(10, 5000) / 10], $data))
                       ->refresh();
     }