--- a/hooks/integrity.py	Wed Aug 01 10:30:48 2012 +0200
+++ b/hooks/integrity.py	Thu Mar 21 18:13:31 2013 +0100
@@ -28,7 +28,7 @@
 from cubicweb import ValidationError
 from cubicweb.schema import (META_RTYPES, WORKFLOW_RTYPES,
                              RQLConstraint, RQLUniqueConstraint)
-from cubicweb.selectors import is_instance
+from cubicweb.predicates import is_instance
 from cubicweb.uilib import soup2xhtml
 from cubicweb.server import hook