diff --git a/lib/jekyll/document.rb b/lib/jekyll/document.rb
index f1fcdf2a..85b22ba5 100644
--- a/lib/jekyll/document.rb
+++ b/lib/jekyll/document.rb
@@ -127,7 +127,7 @@ module Jekyll
     #
     # Returns the computed URL for the document.
     def url
-      @url ||= URL.new({
+      @url = URL.new({
         template:     url_template,
         placeholders: url_placeholders,
         permalink:    permalink