diff -r f5b6878378a2 -r 5be2aa7fc4e0 src/pyams_content/shared/common/zmi/templates/header.pt
--- a/src/pyams_content/shared/common/zmi/templates/header.pt	Mon Jul 09 12:43:15 2018 +0200
+++ b/src/pyams_content/shared/common/zmi/templates/header.pt	Mon Jul 09 13:39:20 2018 +0200
@@ -1,5 +1,5 @@
 <tal:block i18n:domain="pyams_content"
-		   define="config extension:back_configuration">
+		   define="config tales:back_configuration">
 	<tal:if condition="config.display_shared_tool_title">
 		<h1 class="page-title margin-bottom-5" tal:define="back_url view.back_url">
 			<a class="font-xs hint" data-ams-target="#content"
@@ -22,7 +22,7 @@
 		   data-ams-click-handler="PyAMS_content.profile.switchFavorite"
 		   data-ams-hint-gravity="w" title="Add/remove from favorites" i18n:attributes="title"
 		   tal:attributes="class 'fa fa-star{0} txt-color-blue hint opaque align-middle padding-left-10 padding-bottom-5'.format('' if view.favorite_content else '-o');
-						   data-ams-plugin-pyams_content-src extension:resource_path('pyams_content.skin:pyams_content');
+						   data-ams-plugin-pyams_content-src tales:resource_path('pyams_content.skin:pyams_content');
 						   data-sequence-oid view.hex_oid;"></i><br />
 		<span class="content-version" tal:content="string:V${view.version_id}">Version</span> =
 		<span class="content-state" tal:content="structure view.state">state</span> |