--- a/src/pyams_security/views/templates/login-header.pt	Mon Jul 02 17:26:12 2018 +0200
+++ b/src/pyams_security/views/templates/login-header.pt	Mon Jul 09 13:42:56 2018 +0200
@@ -1,9 +1,9 @@
 <tal:var i18n:domain="pyams_security">
 	<h3 class="modal-title"
-		tal:define="config extension:configuration;
-					back_config extension:back_configuration;">
+		tal:define="config tales:configuration;
+					back_config tales:back_configuration;">
 		<tal:if condition="config.logo">
-			<img tal:define="href extension:absolute_url(config.logo)"
+			<img tal:define="href tales:absolute_url(config.logo)"
 				 tal:attributes="src string:${href}/++thumb++200x70.png;">
 		</tal:if>
 		<span class="title" tal:content="i18n:back_config.title">Title</span>