diff --git a/openerp/addons/base/rng/view.rng b/openerp/addons/base/rng/view.rng
index 5556d131fee..a95abd9ac4f 100644
--- a/openerp/addons/base/rng/view.rng
+++ b/openerp/addons/base/rng/view.rng
@@ -63,6 +63,9 @@
                     <!-- In case the action is an act_window,
                          overrides its own @views. -->
                     <rng:optional><rng:attribute name="view_mode"/></rng:optional>
+                    <!-- Add a 'Create' button in order to create a new resource of the action's model
+                         values :  [true|false|<ID of specific form view>]. -->
+                    <rng:optional><rng:attribute name="creatable"/></rng:optional>
                 </rng:element>
             </rng:zeroOrMore>
         </rng:element>