--- a/src/pyams_workflow/zmi/viewlet/templates/versions.pt	Thu Jun 28 08:45:49 2018 +0200
+++ b/src/pyams_workflow/zmi/viewlet/templates/versions.pt	Mon Jul 09 13:45:04 2018 +0200
@@ -11,7 +11,7 @@
 	<ul class="dropdown-menu">
 		<li class="small"
 			tal:repeat="version view.workflow_versions">
-			<a tal:define="url extension:absolute_url(version);
+			<a tal:define="url tales:absolute_url(version);
 						   state view.get_workflow_state(version);"
 			   tal:attributes="data-ams-url string:${url}/admin#${request.view_name}">
 				<i class="fa fa-fw"