diff --git a/plugins/code_block.rb b/plugins/code_block.rb
index e175d44..28cc841 100644
--- a/plugins/code_block.rb
+++ b/plugins/code_block.rb
@@ -78,8 +78,7 @@ module Jekyll
     end
 
     def render(context)
-      output = super
-      code = super.join
+      code = super
       source = "<figure class='code'>"
       source += @caption if @caption
       if @filetype