gistfile1.diff

diff --git a/lib/sys.js b/lib/sys.js
index 9c4dc6d..827f81d 100644
--- a/lib/sys.js
+++ b/lib/sys.js
@@ -98,7 +98,7 @@ var formatter = function(value, indent, parents) {
         });
       } else {
         return formatObject(value, indent, parents, '{}', function(x, f) {
-          return f(x) + ': ' + f(value[x]);
+          return x + ': ' + f(value[x]);
         });
       }
       return buffer;