diff --git a/addons/web/static/src/js/view_form.js b/addons/web/static/src/js/view_form.js
index 5619f42f269..62268b7b81f 100644
--- a/addons/web/static/src/js/view_form.js
+++ b/addons/web/static/src/js/view_form.js
@@ -252,7 +252,8 @@ openerp.web.FormView = openerp.web.View.extend( /** @lends openerp.web.FormView#
             'None': function () {return null;},
             'context': function (i) {
                 context_index = i;
-                var ctx = widget.build_context ? widget.build_context() : {};
+                ar ctx = widget.build_context ?
+                    _.extend(widget.build_context(),self.dataset.context):{};
                 return ctx;
             }
         };