diff --git a/htmltidy.js b/htmltidy.js
index 6e501da..83de25b 100644
--- a/htmltidy.js
+++ b/htmltidy.js
@@ -29,8 +29,11 @@ function TidyWorker(opts) {
   this.writable= true;
   this.readable= true;
   this._worker = spawn(tidyExec, parseOpts(mergedOpts));
+  this._worker.stdout.setEncoding('utf8'); //Fix : ISO-8859-1 special characters not translated correctly
+
   var self = this;
   var errors = '';
+  
   this._worker.stdin.on('drain', function () {
     self.emit('drain');
   });