diff --git a/js/hmmm.js b/js/hmmm.js
index 1d4097c..18abacb 100644
--- a/js/hmmm.js
+++ b/js/hmmm.js
@@ -438,7 +438,7 @@ var hmmm = hmmm || {};
   //-------------------
   
   function isWhitespace(character) {
-    return character === ' ' || character === '\t';
+    return character === ' ' || character === '\t' || character === '\r';
   }
   
   function isNewline(character) {