--- a/src/pyams_content/component/illustration/zmi/templates/illustration-thumbnail.pt	Mon Jul 09 12:43:15 2018 +0200
+++ b/src/pyams_content/component/illustration/zmi/templates/illustration-thumbnail.pt	Mon Jul 09 13:39:20 2018 +0200
@@ -1,4 +1,4 @@
 <tal:var i18n:domain="pyams_content">
 	<img tal:define="illustration i18n:view.illustration.data"
-		 tal:attributes="src extension:absolute_url(illustration, '++thumb++128x24.png')" />
+		 tal:attributes="src tales:absolute_url(illustration, '++thumb++128x24.png')" />
 </tal:var>