diff --git a/product/ERP5/Document/SupplyLink.py b/product/ERP5/Document/SupplyLink.py
index c63d5289a4e85c98fa2679e162f88d9a5cbb5a6d..69c6489982921eb339bb8c2a0b82dbc96f671d80 100644
--- a/product/ERP5/Document/SupplyLink.py
+++ b/product/ERP5/Document/SupplyLink.py
@@ -70,6 +70,7 @@ class SupplyLink(Path, XMLObject):
                       , PropertySheet.TransformedResource
                       , PropertySheet.Delivery
                       , PropertySheet.Simulation
+                      , PropertySheet.Reference
                       )
 
     security.declareProtected(Permissions.AccessContentsInformation,