diff --git a/lib/simplepay.rb b/lib/simplepay.rb
index 4e99dc4..76e9c45 100644
--- a/lib/simplepay.rb
+++ b/lib/simplepay.rb
@@ -17,7 +17,7 @@
 
 module Simplepay
   
-  VERSION = '0.2.2.1' unless const_defined?(:VERSION)
+  VERSION = '0.2.2.2' unless const_defined?(:VERSION)
 
   mattr_accessor :aws_access_key_id
   @@aws_access_key_id = '' 
diff --git a/lib/simplepay/helpers/notification_helper.rb b/lib/simplepay/helpers/notification_helper.rb
index 512a7b7..5181427 100644
--- a/lib/simplepay/helpers/notification_helper.rb
+++ b/lib/simplepay/helpers/notification_helper.rb
@@ -8,13 +8,13 @@ module Helpers
     ##
     # Adds a +valid_simplepay_request?+ method to your ActionControllers.
     # 
-    # In order to use this, you should just directly hand your +params+ into
-    # the method:
+    # In order to use this, you should just directly hand your ipn endpoint and 
+    # +params+ into the method:
     # 
     #     class FooController < ApplicationController
     #     
     #       def receive_ipn
-    #         if valid_simplepay_request?(params)
+    #         if valid_simplepay_request?(endpoint, request.query_params)
     #           ... record something useful ...
     #         else
     #           ... maybe log a bad request? ...
@@ -41,14 +41,15 @@ module NotificationHelper
       # 
       def valid_simplepay_request?(endpoint, query)
         url = Simplepay.use_sandbox ? 'https://fps.sandbox.amazonaws.com' : 'https://fps.amazonaws.com'
+
         endpoint = CGI.escape(endpoint)
         query = CGI.escape(query)
 
         url_and_query = url + "/?Action=VerifySignature&Version=2008-09-17&UrlEndPoint=#{endpoint}&HttpParameters=#{query}"
+
         result = Nokogiri::XML(open(url_and_query)) rescue false
-        result.css("VerificationStatus").children.to_s == "Success"
+        return (result ? (result.css("VerificationStatus").children.to_s == "Success") : false)
       end
-
     end
 
   end