diff --git a/openerp/addons/base/rng/view.rng b/openerp/addons/base/rng/view.rng
index dfeeb03d98b..de0af811b83 100644
--- a/openerp/addons/base/rng/view.rng
+++ b/openerp/addons/base/rng/view.rng
@@ -393,6 +393,7 @@
             <rng:optional><rng:attribute name="day_length"/></rng:optional>
             <rng:optional><rng:attribute name="date_start"/></rng:optional>
             <rng:optional><rng:attribute name="date_stop"/></rng:optional>
+            <rng:optional><rng:attribute name="progress"/></rng:optional>
             <rng:optional><rng:attribute name="date_string"/></rng:optional>
             <rng:optional><rng:attribute name="string"/></rng:optional>
             <rng:optional><rng:attribute name="default_group_by"/></rng:optional>