diff --git a/lib/nightcrawler_swift/connection.rb b/lib/nightcrawler_swift/connection.rb
index <HASH>..<HASH> 100644
--- a/lib/nightcrawler_swift/connection.rb
+++ b/lib/nightcrawler_swift/connection.rb
@@ -16,6 +16,7 @@ module NightcrawlerSwift
     connected_attr_reader :catalog, :admin_url, :upload_url, :public_url, :internal_url
 
     def auth_response
+      @auth_response ||= nil
       authenticate! if @auth_response.nil?
       @auth_response
     end
Initialize the variable before use it to avoid warnings