diff --git a/product/ERP5/Document/IdGenerator.py b/product/ERP5/Document/IdGenerator.py
index 78546f48d67c1e3aa6fe9006a10942abcff66471..fe423c8ff532850f37cd5610972da8f8a0bd0959 100644
--- a/product/ERP5/Document/IdGenerator.py
+++ b/product/ERP5/Document/IdGenerator.py
@@ -50,6 +50,7 @@ class IdGenerator(Base):
 
   # Declarative property
   property_sheets = ( PropertySheet.Base,
+                      PropertySheet.DublinCore,
                       PropertySheet.Version,
                       PropertySheet.Reference)