diff --git a/bin/addons/base/rng/view.rng b/bin/addons/base/rng/view.rng
index d2a81941d84..41f10afa690 100644
--- a/bin/addons/base/rng/view.rng
+++ b/bin/addons/base/rng/view.rng
@@ -311,6 +311,7 @@
             <rng:optional><rng:attribute name="height"/></rng:optional>
             <rng:optional><rng:attribute name="rowspan"/></rng:optional>
             <rng:optional><rng:attribute name="align"/></rng:optional>
+            <rng:optional><rng:attribute name="selection"/></rng:optional>            
             <rng:zeroOrMore>
                 <rng:choice>
                     <rng:ref name="form"/>