diff --git a/app/controllers/jwt_controller.rb b/app/controllers/jwt_controller.rb
index 0048a1a31e..599f62bd12 100644
--- a/app/controllers/jwt_controller.rb
+++ b/app/controllers/jwt_controller.rb
@@ -3,7 +3,7 @@ class JwtController < ApplicationController
   skip_before_action :verify_authenticity_token
 
   SERVICES = {
-    'container_registry' => Jwt::ContainerRegistryAuthenticationService,
+    'container_registry' => JWT::ContainerRegistryAuthenticationService,
   }
 
   def auth
diff --git a/app/services/jwt/container_registry_authentication_service.rb b/app/services/jwt/container_registry_authentication_service.rb
index b9fcd38047..0ab3e6d02b 100644
--- a/app/services/jwt/container_registry_authentication_service.rb
+++ b/app/services/jwt/container_registry_authentication_service.rb
@@ -1,11 +1,11 @@
-module Jwt
+module JWT
   class ContainerRegistryAuthenticationService < BaseService
     def execute
       if params[:offline_token]
         return error('forbidden', 403) unless current_user
       end
 
-      return error('forbidden', 401) if scopes.empty?
+      return error('forbidden', 401) if scopes.blank?
 
       { token: authorized_token(scopes).encoded }
     end
@@ -13,7 +13,7 @@ module Jwt
     private
 
     def authorized_token(access)
-      token = ::Jwt::RSAToken.new(registry.key)
+      token = ::JWT::RSAToken.new(registry.key)
       token.issuer = registry.issuer
       token.audience = params[:service]
       token.subject = current_user.try(:username)
diff --git a/config/initializers/1_settings.rb b/config/initializers/1_settings.rb
index 1040d840e3..3853845fee 100644
--- a/config/initializers/1_settings.rb
+++ b/config/initializers/1_settings.rb
@@ -271,7 +271,7 @@ Settings.artifacts['max_size']    ||= 100 # in megabytes
 # Registry
 #
 Settings['registry'] ||= Settingslogic.new({})
-Settings.registry['registry']     = false if Settings.registry['enabled'].nil?
+Settings.registry['enabled']     = false if Settings.registry['enabled'].nil?
 Settings.registry['host']         ||= "example.com"
 Settings.registry['internal_host']||= "localhost"
 Settings.registry['key']          ||= nil
diff --git a/lib/jwt/rsa_token.rb b/lib/jwt/rsa_token.rb
index cc265e3b31..0438135ad5 100644
--- a/lib/jwt/rsa_token.rb
+++ b/lib/jwt/rsa_token.rb
@@ -1,4 +1,4 @@
-module Jwt
+module JWT
   class RSAToken < Token
     attr_reader :key_file
 
diff --git a/lib/jwt/token.rb b/lib/jwt/token.rb
index 765ab0d60c..f13abf2b71 100644
--- a/lib/jwt/token.rb
+++ b/lib/jwt/token.rb
@@ -1,4 +1,4 @@
-module Jwt
+module JWT
   class Token
     attr_accessor :issuer, :subject, :audience, :id
     attr_accessor :issued_at, :not_before, :expire_time
@@ -43,4 +43,4 @@ module Jwt
       }.compact
     end
   end
-end
\ No newline at end of file
+end
diff --git a/spec/lib/jwt/rsa_token_spec.rb b/spec/lib/jwt/rsa_token_spec.rb
index 710801923e..a5b1d3a67d 100644
--- a/spec/lib/jwt/rsa_token_spec.rb
+++ b/spec/lib/jwt/rsa_token_spec.rb
@@ -1,4 +1,4 @@
-describe Jwt::RSAToken do
+describe JWT::RSAToken do
   let(:rsa_key) { generate_key }
   let(:rsa_token) { described_class.new(nil) }
   let(:rsa_encoded) { rsa_token.encoded }
diff --git a/spec/lib/jwt/token_spec.rb b/spec/lib/jwt/token_spec.rb
index a56b4cf39b..92fdc3f1b7 100644
--- a/spec/lib/jwt/token_spec.rb
+++ b/spec/lib/jwt/token_spec.rb
@@ -1,4 +1,4 @@
-describe Jwt::Token do
+describe JWT::Token do
   let(:token) { described_class.new }
 
   context 'custom parameters' do
diff --git a/spec/services/jwt/container_registry_authentication_service_spec.rb b/spec/services/jwt/container_registry_authentication_service_spec.rb
index ea91f499d0..1873ea2639 100644
--- a/spec/services/jwt/container_registry_authentication_service_spec.rb
+++ b/spec/services/jwt/container_registry_authentication_service_spec.rb
@@ -1,23 +1,23 @@
 require 'spec_helper'
 
-describe Jwt::ContainerRegistryAuthenticationService, services: true do
+describe JWT::ContainerRegistryAuthenticationService, services: true do
   let(:current_project) { nil }
   let(:current_user) { nil }
   let(:current_params) { {} }
   let(:rsa_key) { OpenSSL::PKey::RSA.generate(512) }
-  let(:registry_settings) {
+  let(:registry_settings) do
     {
       issuer: 'rspec',
       key: nil
     }
-  }
+  end
   let(:payload) { JWT.decode(subject[:token], rsa_key).first }
 
   subject { described_class.new(current_project, current_user, current_params).execute }
 
   before do
     allow(Gitlab.config.registry).to receive_messages(registry_settings)
-    allow_any_instance_of(Jwt::RSAToken).to receive(:key).and_return(rsa_key)
+    allow_any_instance_of(JWT::RSAToken).to receive(:key).and_return(rsa_key)
   end
 
   shared_examples 'an authenticated' do
@@ -26,13 +26,13 @@ describe Jwt::ContainerRegistryAuthenticationService, services: true do
   end
 
   shared_examples 'a accessible' do
-    let(:access) {
+    let(:access) do
       [{
          'type' => 'repository',
          'name' => project.path_with_namespace,
          'actions' => actions,
        }]
-    }
+    end
 
     it_behaves_like 'an authenticated'
     it { expect(payload).to include('access' => access) }
@@ -68,9 +68,9 @@ describe Jwt::ContainerRegistryAuthenticationService, services: true do
     context 'allow developer to push images' do
       before { project.team << [current_user, :developer] }
 
-      let(:current_params) {
+      let(:current_params) do
         { scope: "repository:#{project.path_with_namespace}:push" }
-      }
+      end
 
       it_behaves_like 'a pushable'
     end
@@ -78,9 +78,9 @@ describe Jwt::ContainerRegistryAuthenticationService, services: true do
     context 'allow reporter to pull images' do
       before { project.team << [current_user, :reporter] }
 
-      let(:current_params) {
+      let(:current_params) do
         { scope: "repository:#{project.path_with_namespace}:pull" }
-      }
+      end
 
       it_behaves_like 'a pullable'
     end
@@ -88,9 +88,9 @@ describe Jwt::ContainerRegistryAuthenticationService, services: true do
     context 'return a least of privileges' do
       before { project.team << [current_user, :reporter] }
 
-      let(:current_params) {
+      let(:current_params) do
         { scope: "repository:#{project.path_with_namespace}:push,pull" }
-      }
+      end
 
       it_behaves_like 'a pullable'
     end
@@ -98,9 +98,9 @@ describe Jwt::ContainerRegistryAuthenticationService, services: true do
     context 'disallow guest to pull or push images' do
       before { project.team << [current_user, :guest] }
 
-      let(:current_params) {
+      let(:current_params) do
         { scope: "repository:#{project.path_with_namespace}:pull,push" }
-      }
+      end
 
       it_behaves_like 'a forbidden'
     end
@@ -110,9 +110,9 @@ describe Jwt::ContainerRegistryAuthenticationService, services: true do
     let(:current_project) { create(:empty_project) }
 
     context 'allow to pull and push images' do
-      let(:current_params) {
+      let(:current_params) do
         { scope: "repository:#{current_project.path_with_namespace}:pull,push" }
-      }
+      end
 
       it_behaves_like 'a pullable and pushable' do
         let(:project) { current_project }
@@ -121,9 +121,9 @@ describe Jwt::ContainerRegistryAuthenticationService, services: true do
 
     context 'for other projects' do
       context 'when pulling' do
-        let(:current_params) {
+        let(:current_params) do
           { scope: "repository:#{project.path_with_namespace}:pull" }
-        }
+        end
 
         context 'allow for public' do
           let(:project) { create(:empty_project, :public) }
@@ -137,9 +137,9 @@ describe Jwt::ContainerRegistryAuthenticationService, services: true do
       end
 
       context 'when pushing' do
-        let(:current_params) {
+        let(:current_params) do
           { scope: "repository:#{project.path_with_namespace}:push" }
-        }
+        end
 
         context 'disallow for all' do
           let(:project) { create(:empty_project, :public) }
@@ -152,9 +152,9 @@ describe Jwt::ContainerRegistryAuthenticationService, services: true do
 
   context 'unauthorized' do
     context 'for invalid scope' do
-      let(:current_params) {
+      let(:current_params) do
         { scope: 'invalid:aa:bb' }
-      }
+      end
 
       it_behaves_like 'a forbidden'
     end
@@ -162,9 +162,9 @@ describe Jwt::ContainerRegistryAuthenticationService, services: true do
     context 'for private project' do
       let(:project) { create(:empty_project, :private) }
 
-      let(:current_params) {
+      let(:current_params) do
         { scope: "repository:#{project.path_with_namespace}:pull" }
-      }
+      end
 
       it_behaves_like 'a forbidden'
     end
@@ -173,17 +173,17 @@ describe Jwt::ContainerRegistryAuthenticationService, services: true do
       let(:project) { create(:empty_project, :public) }
 
       context 'when pulling and pushing' do
-        let(:current_params) {
+        let(:current_params) do
           { scope: "repository:#{project.path_with_namespace}:pull,push" }
-        }
+        end
 
         it_behaves_like 'a pullable'
       end
 
       context 'when pushing' do
-        let(:current_params) {
+        let(:current_params) do
           { scope: "repository:#{project.path_with_namespace}:push" }
-        }
+        end
 
         it_behaves_like 'a forbidden'
       end