diff --git a/addons/document/report/document_report.py b/addons/document/report/document_report.py
index 92e33c13746..66630dc3d43 100644
--- a/addons/document/report/document_report.py
+++ b/addons/document/report/document_report.py
@@ -63,6 +63,7 @@ class report_document_user(osv.osv):
              )
         """)
 
+report_document_user()
 
 class report_document_file(osv.osv):
     _name = "report.document.file"
@@ -87,5 +88,6 @@ class report_document_file(osv.osv):
              )
         """)
 
+report_document_file()
 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
 
diff --git a/addons/document/report/document_report_view.xml b/addons/document/report/document_report_view.xml
index 2a8b9f34ddf..2740967d53a 100644
--- a/addons/document/report/document_report_view.xml
+++ b/addons/document/report/document_report_view.xml
@@ -114,7 +114,7 @@
             <field name="model">report.document.user</field>
             <field name="arch" type="xml">
                 <graph string="Files by User" type="pie">
-                    <field name="user" />
+                    <field name="user_id" />
                     <field name="nbr" operator="+"/>
                 </graph>
             </field>