diff --git a/mayan/apps/common/templatetags/common_tags.py b/mayan/apps/common/templatetags/common_tags.py
index c1a35a6177..b5cbbb249e 100644
--- a/mayan/apps/common/templatetags/common_tags.py
+++ b/mayan/apps/common/templatetags/common_tags.py
@@ -83,10 +83,9 @@ def render_subtemplate(context, template_name, template_context):
     Renders the specified template with the mixed parent and
     subtemplate contexts
     """
-
-    new_context = Context(context)
+    new_context = Context(context.flatten())
     new_context.update(Context(template_context))
-    return get_template(template_name).render(new_context)
+    return get_template(template_name).render(new_context.flatten())
 
 
 @register.simple_tag