--- a/src/pyams_thesaurus/thesaurus.py	Tue May 16 11:24:06 2017 +0200
+++ b/src/pyams_thesaurus/thesaurus.py	Tue May 16 11:24:46 2017 +0200
@@ -314,7 +314,7 @@
             return extracts
 
 
-@implementer(IThesaurusExtract)
+@implementer(IThesaurusExtract, IDefaultProtectionPolicy)
 class ThesaurusExtract(Persistent, Contained):
     """Thesaurus extract"""