diff --git a/test/models/invoice/vat_rate_test.rb b/test/models/invoice/vat_rate_test.rb
index cb2bd9f19..27bc4b705 100644
--- a/test/models/invoice/vat_rate_test.rb
+++ b/test/models/invoice/vat_rate_test.rb
@@ -5,7 +5,7 @@ class InvoiceVATRateTest < ActiveSupport::TestCase
     @invoice = invoices(:valid)
   end
 
-  def test_valid_without_vat_rate
+  def test_optional_vat_rate
     @invoice.vat_rate = nil
     assert @invoice.valid?
   end