diff --git a/ckan/config/environment.py b/ckan/config/environment.py
index a307ea3af03..feb6deba8d3 100644
--- a/ckan/config/environment.py
+++ b/ckan/config/environment.py
@@ -195,7 +195,7 @@ def template_loaded(template):
     env = config['pylons.app_globals'].jinja_env = Environment(
         loader=PackageLoader('ckan', 'templates'),
         autoescape=True,
-        extensions=['jinja2.ext.i18n', 'jinja2.ext.do',
+        extensions=['jinja2.ext.i18n', 'jinja2.ext.do', 'jinja2.ext.with_',
                     lib.jinja_tags.SnippetExtension,
                     lib.jinja_tags.UrlForExtension]
     )