diff --git a/HISTORY.md b/HISTORY.md
index 220c52d..72f6d8a 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -3,6 +3,11 @@
 https://github.com/josdejong/jsoneditor
 
 
+## 2014-08-01, version 3.1.2
+
+- Fixed `parseJS` not being able to parse a single quoted string to JSON.
+
+
 ## 2014-08-01, version 3.1.1
 
 - Replaced parsing of JavaScript objects into JSON from `eval` to a dedicated
diff --git a/src/js/util.js b/src/js/util.js
index 9947874..fe54d44 100644
--- a/src/js/util.js
+++ b/src/js/util.js
@@ -68,7 +68,7 @@ define(function () {
     var jsonString = chars.join('');
 
     // replace keys/values enclosed by single quotes with double quotes
-    jsonString = jsonString.replace(/(.)'/g, function ($0, $1) {
+    jsonString = jsonString.replace(/(.?)'/g, function ($0, $1) {
       var str = $1.replace(/"/g, '\\"'); // escape double quotes
       return ($1 == '\\') ? '\'' : str + '"';
     });