diff --git a/addons/calendar/static/src/xml/base_calendar.xml b/addons/calendar/static/src/xml/base_calendar.xml
index 31721b238ae..c3e6613a86e 100644
--- a/addons/calendar/static/src/xml/base_calendar.xml
+++ b/addons/calendar/static/src/xml/base_calendar.xml
@@ -75,7 +75,7 @@
      </t>
 
     <t t-extend="CalendarView.sidebar.responsible">
-        <t t-jquery="span#color_filter" t-operation="after">
+        <t t-jquery="span[t-attf-class*='color_filter']" t-operation="after">
             <t t-if="(filters_value.value != -1) &amp;&amp; (filters_value.is_remove != false)">
                 <span class="oe_remove_follower oe_e hidden" title="Remove this favorite from the list" t-att-data-id="filters_value.value">X</span>
            </t>