diff --git a/lib/jekyll/page.rb b/lib/jekyll/page.rb
index 1542e986..aa773ebf 100644
--- a/lib/jekyll/page.rb
+++ b/lib/jekyll/page.rb
@@ -140,7 +140,7 @@ module Jekyll
 
     # The path to the page source file, relative to the site source
     def relative_path
-      File.join(*[@dir, @name].map(&:to_s).reject(&:empty?)).sub(%r{\A\/}, "")
+      File.join(*[@dir, @name].map(&:to_s).reject(&:empty?)).sub(%r!\A\/!, "")
     end
 
     # Obtain destination path.