diff --git a/product/ERP5/Document/Document.py b/product/ERP5/Document/Document.py
index 814cf8aef431785c15a6bd22bc621ffbfc0f74ee..0c6d72cf9cfbca27e434f26763a4768730b23bde 100644
--- a/product/ERP5/Document/Document.py
+++ b/product/ERP5/Document/Document.py
@@ -1379,7 +1379,7 @@ class Document(PermanentURLMixIn, XMLObject, UrlMixIn, ConversionCacheMixin, Sna
   def _setBaseData(self, data):
     if data is not None:
       data = Pdata(data)
-    self._baseSetBaseData(Pdata(data))
+    self._baseSetBaseData(data)
 
   security.declareProtected(Permissions.AccessContentsInformation,
                             'getBaseData')