diff --git a/.gitignore b/.gitignore
index ef4c0a0..81ef8b7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,5 @@ eggs/
 parts/
 src/
 var/
+.idea
+.gitignore
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/README.rst b/README.rst
index f7542ef..0719faf 100644
--- a/README.rst
+++ b/README.rst
@@ -8,6 +8,7 @@ against a CAS (Central Autentication Server).
 
 It currently supports CAS 2.0 and CAS 3.0 protocols.
 
+(pe82/ftw.casauth) Was debugged for and tested with Plone 5 and CAS 3.3.
 
 Installation
 ============
diff --git a/ftw/casauth/cas.py b/ftw/casauth/cas.py
index 9c61fcb..91d46c4 100644
--- a/ftw/casauth/cas.py
+++ b/ftw/casauth/cas.py
@@ -2,7 +2,7 @@
 import urllib
 import urllib2
 from logging import getLogger
-from xml.dom.minidom import parseString
+from xml.dom.minidom import parseString, parse
 from xml.parsers.expat import ExpatError
 
 if USE_CUSTOM_HTTPS_HANDLER:
@@ -10,8 +10,6 @@
 else:
     from urllib2 import HTTPSHandler
 
-CAS_NS = "http://www.yale.edu/tp/cas"
-
 logger = getLogger('ftw.casauth')
 
 
@@ -24,7 +22,9 @@ def validate_ticket(ticket, cas_server_url, service_url):
         ticket,
     )
 
+    logger.info("Validate URL: " + validate_url)
     opener = urllib2.build_opener(HTTPSHandler)
+
     try:
         resp = opener.open(validate_url)
     except urllib2.HTTPError as e:
@@ -44,14 +44,15 @@ def validate_ticket(ticket, cas_server_url, service_url):
     resp_data = resp.read()
     try:
         doc = parseString(resp_data)
-    except ExpatError:
+    except ExpatError as exp:
+        logger.info("ExpatError: %s" % exp.message)
         return False
-    auth_success = doc.getElementsByTagNameNS(CAS_NS,
-                                              'authenticationSuccess')
+    auth_success = doc.getElementsByTagName('cas:authenticationSuccess')
+
     if not auth_success:
-        auth_fail = doc.getElementsByTagNameNS(CAS_NS,
-                                               'authenticationFailure')
+        auth_fail = doc.getElementsByTagName('cas:authenticationFailure')
         if auth_fail:
+            logger.info('auth_fail is true, doc = {}'.format(doc.toprettyxml()))
             logger.info(
                 "Authentication failed: Service ticket validation returned"
                 " '%s'." % auth_fail[0].getAttribute('code'))
@@ -60,9 +61,11 @@ def validate_ticket(ticket, cas_server_url, service_url):
                         " ticket.")
         return False
 
-    userid = auth_success[0].getElementsByTagNameNS(CAS_NS, 'user')
+    userid = auth_success[0].getElementsByTagName('cas:user')
     if not userid:
         return False
     userid = userid[0].firstChild.data
 
+    logger.info("Validated User ID: %s" % userid)
+
     return userid
diff --git a/ftw/casauth/plugin.py b/ftw/casauth/plugin.py
index 8a383ec..e01d64f 100644
--- a/ftw/casauth/plugin.py
+++ b/ftw/casauth/plugin.py
@@ -128,5 +128,6 @@ def manage_updateConfig(self, REQUEST):
     def _service_url(self, request):
         url = request['ACTUAL_URL']
         if request['QUERY_STRING']:
-            url = '%s?%s' % (url, request['QUERY_STRING'])
+            #url = '%s?%s' % (url, request['QUERY_STRING'])
+            pass
         return url
diff --git a/setup.py b/setup.py
index 9532d12..f6069c9 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 import os
 import sys
 
-version = '1.0.1.dev0'
+version = '1.1.5'
 
 tests_require = [
     'plone.app.testing',