diff --git a/lib/redmine/wiki_formatting/macros.rb b/lib/redmine/wiki_formatting/macros.rb
index a2acd07eb3..cb4976eb78 100644
--- a/lib/redmine/wiki_formatting/macros.rb
+++ b/lib/redmine/wiki_formatting/macros.rb
@@ -281,7 +281,7 @@ module Redmine
 
         container = obj.is_a?(Journal) ? obj.journalized : obj
         attachments = container.attachments if container.respond_to?(:attachments)
-        if (controller_name == 'previews' || action_name == 'preview') && @attachments.present?
+        if (controller_path == 'previews' || action_name == 'preview') && @attachments.present?
           attachments = (attachments.to_a + @attachments).compact
         end
         if attachments.present? && (attachment = Attachment.latest_attach(attachments, filename))