diff --git a/spec/factories/captain/unit.rb b/spec/factories/captain/unit.rb
index 64f82f710..be15c1b12 100644
--- a/spec/factories/captain/unit.rb
+++ b/spec/factories/captain/unit.rb
@@ -1,9 +1,12 @@
 FactoryBot.define do
   factory :captain_unit, class: 'Captain::Unit' do
     association :account
-    association :brand, factory: :captain_brand, account: account
     sequence(:name) { |n| "Unidade #{n}" }
     inter_pix_key { SecureRandom.uuid }
     inter_account_number { Faker::Number.number(digits: 8) }
+
+    brand do
+      Captain::Brand.find_by(account_id: account.id) || association(:captain_brand, account: account)
+    end
   end
 end
diff --git a/spec/factories/captain_unit_factory_spec.rb b/spec/factories/captain_unit_factory_spec.rb
new file mode 100644
index 000000000..ad99331d6
--- /dev/null
+++ b/spec/factories/captain_unit_factory_spec.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe 'captain_unit factory' do # rubocop:disable RSpec/DescribeClass
+  it 'cria uma unit com conta e brand próprios' do
+    unit = create(:captain_unit)
+    expect(unit).to be_persisted
+    expect(unit.account).to be_present
+    expect(unit.brand).to be_present
+    expect(unit.brand.account_id).to eq(unit.account_id)
+  end
+
+  it 'usa a conta fornecida' do
+    account = create(:account)
+    unit = create(:captain_unit, account: account)
+    expect(unit.account).to eq(account)
+    expect(unit.brand.account_id).to eq(account.id)
+  end
+
+  it 'reusa um brand existente da mesma conta' do
+    account = create(:account)
+    brand = create(:captain_brand, account: account)
+    unit = create(:captain_unit, account: account)
+    expect(unit.brand).to eq(brand)
+  end
+end