diff --git a/lib/process.js b/lib/process.js
index f2f41626..aab66799 100644
--- a/lib/process.js
+++ b/lib/process.js
@@ -134,10 +134,6 @@ module.exports = function(src, filename, config) {
     templateLine
   )
 
-  if (map) {
-    output.code += '\n' + convertSourceMap.fromJSON(map.toString()).toComment()
-  }
-
   return {
     code: output.code,
     map