diff --git a/addons/mass_mailing/views/snippets_themes.xml b/addons/mass_mailing/views/snippets_themes.xml
index ec7fc13500c..fffe372b867 100644
--- a/addons/mass_mailing/views/snippets_themes.xml
+++ b/addons/mass_mailing/views/snippets_themes.xml
@@ -198,7 +198,7 @@
                 </div>
             </div>
             <div class="row">
-                <div class="o_mail_footer_links">
+                <div class="col-lg o_mail_footer_links">
                     <a role="button" href="/unsubscribe_from_list" class="btn btn-link">Unsubscribe</a>
                 </div>
             </div>