diff --git a/spec/lib/gitlab/favicon_spec.rb b/spec/lib/gitlab/favicon_spec.rb
index 23de12f12f8..63c26e29d73 100644
--- a/spec/lib/gitlab/favicon_spec.rb
+++ b/spec/lib/gitlab/favicon_spec.rb
@@ -1,14 +1,16 @@
 require 'spec_helper'
 
 RSpec.describe Gitlab::Favicon, :request_store do
+  include RailsHelpers
+
   describe '.main' do
     it 'defaults to favicon.png' do
-      allow(Rails).to receive(:env).and_return(ActiveSupport::StringInquirer.new('production'))
+      stub_rails_env('production')
       expect(described_class.main).to match_asset_path '/assets/favicon.png'
     end
 
     it 'has blue favicon for development', unless: Gitlab.ee? do
-      allow(Rails).to receive(:env).and_return(ActiveSupport::StringInquirer.new('development'))
+      stub_rails_env('development')
       expect(described_class.main).to match_asset_path '/assets/favicon-blue.png'
     end
 
@@ -24,7 +26,7 @@ RSpec.describe Gitlab::Favicon, :request_store do
 
     context 'asset host' do
       before do
-        allow(Rails).to receive(:env).and_return(ActiveSupport::StringInquirer.new('production'))
+        stub_rails_env('production')
       end
 
       it 'returns a relative url when the asset host is not configured' do
diff --git a/spec/lib/gitlab_spec.rb b/spec/lib/gitlab_spec.rb
index 1fc363460ae..74d4b12a070 100644
--- a/spec/lib/gitlab_spec.rb
+++ b/spec/lib/gitlab_spec.rb
@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 
-require 'fast_spec_helper'
-
-require_dependency 'gitlab'
+require 'spec_helper'
 
 describe Gitlab do
+  include RailsHelpers
+
   describe '.root' do
     it 'returns the root path of the app' do
       expect(described_class.root).to eq(Pathname.new(File.expand_path('../..', __dir__)))
@@ -113,7 +113,7 @@ describe Gitlab do
 
     it 'is true when dev env' do
       allow(described_class).to receive_messages(com?: false, org?: false)
-      allow(Rails).to receive(:env).and_return(ActiveSupport::StringInquirer.new('development'))
+      stub_rails_env('development')
 
       expect(described_class.dev_env_org_or_com?).to eq true
     end
diff --git a/spec/support/helpers/rails_helpers.rb b/spec/support/helpers/rails_helpers.rb
new file mode 100644
index 00000000000..e1875b2fb15
--- /dev/null
+++ b/spec/support/helpers/rails_helpers.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+module RailsHelpers
+  def stub_rails_env(env_name)
+    allow(Rails).to receive(:env).and_return(ActiveSupport::StringInquirer.new(env_name))
+  end
+end