diff --git a/addons/mass_mailing/views/mailing_mailing_views.xml b/addons/mass_mailing/views/mailing_mailing_views.xml
index f59c46f3068..4ee21a747f8 100644
--- a/addons/mass_mailing/views/mailing_mailing_views.xml
+++ b/addons/mass_mailing/views/mailing_mailing_views.xml
@@ -67,7 +67,7 @@
 
                         <field name="state" readonly="1" widget="statusbar"/>
                     </header>
-                    <div class="alert alert-info text-center" role="alert" attrs="{'invisible': ['|','&amp;','&amp;','&amp;',('state', '!=', 'in_queue'),('sent', '=', 0),('ignored', '=', 0),('scheduled', '=', 0),('failed', '=', 0)]}">
+                    <div class="alert alert-info text-center" role="alert" attrs="{'invisible': ['&amp;','&amp;','&amp;','&amp;',('state', '!=', 'in_queue'),('sent', '=', 0),('ignored', '=', 0),('scheduled', '=', 0),('failed', '=', 0)]}">
                         <div attrs="{'invisible': [('ignored', '=', 0)]}">
                             <button class="btn-link py-0"
                                     name="action_view_traces_ignored"