diff --git a/addons/crm/crm_meeting_view.xml b/addons/crm/crm_meeting_view.xml
index 960f83e43c9..aa74b0c91c5 100644
--- a/addons/crm/crm_meeting_view.xml
+++ b/addons/crm/crm_meeting_view.xml
@@ -70,7 +70,7 @@
                             <separator colspan="2" string="Visibility"/>
                             <field name="class" string="Privacy"/>
                             <field name="show_as" string="Show time as" groups="base.group_extended"/>
-                            <field name="rrule" invisible="1" />
+                            <field name="rrule" invisible="1" readonly="1"/>
                             <field name="recurrent_id" invisible="1"/>
                             <field name="recurrent_uid" invisible="1"/>
                         </group>