diff --git a/rswag-ui/lib/rswag/ui/basic_auth.rb b/rswag-ui/lib/rswag/ui/basic_auth.rb
index 957ddfb..7bbd85d 100644
--- a/rswag-ui/lib/rswag/ui/basic_auth.rb
+++ b/rswag-ui/lib/rswag/ui/basic_auth.rb
@@ -1,25 +1,34 @@
+# frozen_string_literal: true
+
 require 'rack/auth/basic'
 
-class BasicAuth < ::Rack::Auth::Basic
-  def call(env)
-    return @app.call(env) unless env_matching_path
+module Rswag
+  module Ui
+    # Extend Rack HTTP Basic Authentication, as per RFC 2617.
+    # @api private
+    #
+    class BasicAuth < ::Rack::Auth::Basic
+      def call(env)
+        return @app.call(env) unless env_matching_path
 
-    super(env)
-  end
+        super(env)
+      end
 
-  private
+      private
 
-  def env_matching_path
-    swagger_endpoints = Rswag::Ui.config.swagger_endpoints[:urls]
-    swagger_endpoints.find do |endpoint|
-      base_path = base_path(endpoint[:url])
-      env_base_path = base_path(env['PATH_INFO'])
+      def env_matching_path
+        Rswag::Ui.config.swagger_endpoints[:urls].find do |endpoint|
+          base_path(endpoint[:url]) == env_base_path
+        end
+      end
 
-      base_path == env_base_path
+      def env_base_path
+        base_path(env['PATH_INFO'])
+      end
+
+      def base_path(url)
+        url.downcase.split('/')[1]
+      end
     end
   end
-
-  def base_path(url)
-    url.downcase.split('/')[1]
-  end
 end