diff --git a/product/ERP5/Document/File.py b/product/ERP5/Document/File.py
index da77f38d79978de62ebcdcff9a7a4bda860ce795..347b6bfb48b07711e12b90bf0ade6918d62f6fb0 100644
--- a/product/ERP5/Document/File.py
+++ b/product/ERP5/Document/File.py
@@ -76,7 +76,6 @@ class File(Document, CMFFile, ConversionCacheMixin):
   add_permission = Permissions.AddPortalContent
   isPortalContent = 1
   isRADContent = 1
-  __dav_collection__=0
 
   # Declarative security
   security = ClassSecurityInfo()