diff --git a/bin/addons/base/base_update.xml b/bin/addons/base/base_update.xml
index b3503211424..cbfd33e1cb9 100644
--- a/bin/addons/base/base_update.xml
+++ b/bin/addons/base/base_update.xml
@@ -117,7 +117,7 @@
                                 <separator string="Signature" colspan="2"/>
                                 <field colspan="2" name="signature" nolabel="1"/>
                             </group>
-                            <group colspan="2" col="2">
+                            <group colspan="2" col="2" expand="1">
                                 <separator string="Access Rights (groups)" colspan="2"/>
                                 <field colspan="2" nolabel="1" name="groups_id"/>
                             </group>