diff --git a/golem_activity_registration_slot/views/golem_activity_views.xml b/golem_activity_registration_slot/views/golem_activity_views.xml
index 84d7542..b1cca09 100644
--- a/golem_activity_registration_slot/views/golem_activity_views.xml
+++ b/golem_activity_registration_slot/views/golem_activity_views.xml
@@ -37,6 +37,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
              <field name='slots_duration' widget='float_time'/>
              <field name='registration_slot_ids'>
                <tree editable='bottom'>
+                 <field name="member_id"/>
                  <field name='hour_start' widget='float_time'/>
                  <field name='hour_stop' widget='float_time'/>
                </tree>