diff -r 77036efe2af4 -r 0d1646e1c664 src/pyams_portal/zmi/templates/layout.pt
--- a/src/pyams_portal/zmi/templates/layout.pt	Fri Jun 15 15:39:50 2018 +0200
+++ b/src/pyams_portal/zmi/templates/layout.pt	Fri Jun 15 15:40:03 2018 +0200
@@ -113,7 +113,7 @@
 											<tal:var content="view.get_portlet_label(portlet_name)" />
 											<tal:if condition="current_config.can_inherit">
 												<i title="Override parent or template settings" i18n:attributes="title"
-												   tal:attributes="class python:'fa fa-fw {0} fa-rotate-90 hint opaque align-base'.format('fa-chain-broken' if not current_config.inherit_parent else '')"></i>
+												   tal:attributes="class python:'chain fa fa-fw {0} fa-rotate-90 hint opaque align-base'.format('fa-chain-broken' if not current_config.inherit_parent else '')"></i>
 											</tal:if>
 										</div>
 										<div class="preview"