diff --git a/addons/calendar/models/calendar.py b/addons/calendar/models/calendar.py
index a284f90a4fa..b3b9124c677 100644
--- a/addons/calendar/models/calendar.py
+++ b/addons/calendar/models/calendar.py
@@ -757,6 +757,9 @@ class Meeting(models.Model):
                     event.is_highlighted = True
                 else:
                     event.is_highlighted = False
+        else:
+            for event in self:
+                event.is_highlighted = False
 
     name = fields.Char('Meeting Subject', required=True, states={'done': [('readonly', True)]})
     state = fields.Selection([('draft', 'Unconfirmed'), ('open', 'Confirmed')], string='Status', readonly=True, tracking=True, default='draft')
diff --git a/addons/calendar/views/calendar_views.xml b/addons/calendar/views/calendar_views.xml
index 085c212d651..552fe5c7a41 100644
--- a/addons/calendar/views/calendar_views.xml
+++ b/addons/calendar/views/calendar_views.xml
@@ -265,6 +265,7 @@
                 <field name="attendee_status"/>
                 <field name="partner_id"/>
                 <field name="partner_ids" widget="many2many_tags_avatar" write_model="calendar.contacts" write_field="partner_id" avatar_field="image_128"/>
+                <field name="is_highlighted" invisible="1"/>
                 <field name="description"/>
             </calendar>
         </field>
diff --git a/addons/web/static/src/scss/web_calendar.scss b/addons/web/static/src/scss/web_calendar.scss
index 55fc4c1d9ab..3dfbea15df2 100644
--- a/addons/web/static/src/scss/web_calendar.scss
+++ b/addons/web/static/src/scss/web_calendar.scss
@@ -594,6 +594,15 @@ $o-cw-filter-avatar-size: 20px;
         .fc-event.o_calendar_color_#{$i} {
             border-color: $color;
             color: darken($color, 35%);
+            opacity: 0.8;
+
+            &.o_event_hightlight {
+                opacity: 1;
+
+                .fc-content {
+                    font-weight: bold;
+                }
+            }
 
             .fc-bg {
                 background: mix($color, white);
diff --git a/addons/web/static/src/xml/web_calendar.xml b/addons/web/static/src/xml/web_calendar.xml
index 50c00ab8b20..a4a4731b451 100644
--- a/addons/web/static/src/xml/web_calendar.xml
+++ b/addons/web/static/src/xml/web_calendar.xml
@@ -12,7 +12,7 @@
     </div>
 
     <t t-name="calendar-box">
-        <div t-att-style="typeof color === 'string' ? ('background-color:' + color) + ';' : ''" t-attf-class="#{!event.color_index ? 'text-white' : ''} #{record.is_highlighted and record.is_highlighted.value ? 'o_event_hightlight' : ''} #{typeof color === 'number' ? _.str.sprintf('o_calendar_color_%s', color) : ''}">
+        <div t-att-style="typeof color === 'string' ? ('background-color:' + color) + ';' : ''" t-attf-class="#{!event.color_index ? 'text-white' : ''} #{record.is_highlighted ? 'o_event_hightlight' : ''} #{typeof color === 'number' ? _.str.sprintf('o_calendar_color_%s', color) : ''}">
             <div class="o_event_title" t-esc="record.display_name"/>
         </div>
     </t>