diff --git a/lib/jekyll-pandoc-multiple-formats/pandoc_file.rb b/lib/jekyll-pandoc-multiple-formats/pandoc_file.rb
index 894af9fde49b6474021b21be07f4d0b6aed53ff6..4828fd6bb6579bf44e631111c57b9c386ed38d78 100644
--- a/lib/jekyll-pandoc-multiple-formats/pandoc_file.rb
+++ b/lib/jekyll-pandoc-multiple-formats/pandoc_file.rb
@@ -46,7 +46,7 @@ module Jekyll
         @title = title or posts.data['title']
       end
 
-      @slug  = Utils.slugify(title)
+      @slug = Utils.slugify(@title)
     end
 
     def path