diff --git a/src/memory/memory.py b/src/memory/memory.py
index 6de46173..bcc9f4ad 100644
--- a/src/memory/memory.py
+++ b/src/memory/memory.py
@@ -25,6 +25,7 @@ from xml.dom import minidom
 from logging import debug, info, warning, error
 from twisted.internet import defer
 from twisted.words.protocols.jabber import jid
+from twisted.python.failure import Failure
 from sat.tools.xml_tools import paramsXml2xmlUI
 from sat.core.default_config import default_config
 from sat.memory.sqlite import SqliteStorage
@@ -161,9 +162,9 @@ class Params(object):
         """
         if self.storage.hasProfile(profile):
             info(_('The profile name already exists'))
-            return defer.fail("CONFLICT")
+            return defer.fail(Failure(u"CONFLICT"))
         if not self.host.trigger.point("ProfileCreation", profile):
-            return defer.fail("CANCEL")
+            return defer.fail(Failure(u"CANCEL"))
         return self.storage.createProfile(profile)
 
     def deleteProfile(self, profile):
diff --git a/src/tools/xml_tools.py b/src/tools/xml_tools.py
index 741fc494..dbf09242 100644
--- a/src/tools/xml_tools.py
+++ b/src/tools/xml_tools.py
@@ -21,7 +21,7 @@ from logging import debug, info, error
 from xml.dom import minidom
 from wokkel import data_form
 from twisted.words.xish import domish
-from core import exceptions
+from sat.core import exceptions
 
 """This library help manage XML used in SàT (parameters, registration, etc) """