diff --git a/lib/jekyll/converters/markdown/redcarpet_parser.rb b/lib/jekyll/converters/markdown/redcarpet_parser.rb
index b69df9b8..468069e9 100644
--- a/lib/jekyll/converters/markdown/redcarpet_parser.rb
+++ b/lib/jekyll/converters/markdown/redcarpet_parser.rb
@@ -48,8 +48,8 @@ module Jekyll
           end
 
           protected
-          def rouge_formatter(opts = {})
-            Rouge::Formatters::HTML.new(opts.merge(wrap: false))
+          def rouge_formatter(lexer)
+            Rouge::Formatters::HTML.new(:wrap => false)
           end
         end