diff --git a/README.md b/README.md
index 1940f20..6e0cded 100755
--- a/README.md
+++ b/README.md
@@ -46,7 +46,8 @@ The default is defined in `default.jsbeautifyrc` and looks like this:
         "unescape_strings": false,
         "wrap_line_length": 0,
         "wrap_attributes": "auto",
-        "end_with_newline": true
+        "end_with_newline": true,
+        "comma_first": false
     },
     "css": {
         "eol": "\n",
diff --git a/default.jsbeautifyrc b/default.jsbeautifyrc
index 335000c..325e63b 100644
--- a/default.jsbeautifyrc
+++ b/default.jsbeautifyrc
@@ -13,7 +13,8 @@
         "unescape_strings": false,
         "wrap_line_length": 0,
         "wrap_attributes": "auto",
-        "end_with_newline": true
+        "end_with_newline": true,
+        "comma_first": false
     },
     "css": {
         "eol": "\n",