diff --git a/src/bidi.js b/src/bidi.js
index ed7b3f35c..0c6eea9c2 100644
--- a/src/bidi.js
+++ b/src/bidi.js
@@ -444,7 +444,7 @@ var bidi = PDFJS.bidi = (function bidiClosure() {
         result += ch;
     }
 
-    return new bidiResult(str, direction);
+    return new bidiResult(result, direction);
   }
 
   return bidi;