diff --git a/addons/mail/static/src/components/discuss/discuss.xml b/addons/mail/static/src/components/discuss/discuss.xml
index ca313f75f13..a126b622994 100644
--- a/addons/mail/static/src/components/discuss/discuss.xml
+++ b/addons/mail/static/src/components/discuss/discuss.xml
@@ -4,10 +4,7 @@
     <t t-name="mail.Discuss" owl="1">
         <t t-if="discussView">
             <div class="o_Discuss" t-attf-class="{{ className }}"
-                t-att-class="{
-                    'o-adding-item': discussView.discuss.isAddingChannel or discussView.discuss.isAddingChat,
-                    'o-mobile': messaging.device.isSmall,
-                }"
+                t-att-class="{ 'o-mobile': messaging.device.isSmall }"
                 t-ref="root"
             >
                 <t t-if="!messaging.device.isSmall">