diff --git a/lib/server/rest.js b/lib/server/rest.js
index c4946775..44aeff04 100644
--- a/lib/server/rest.js
+++ b/lib/server/rest.js
@@ -372,8 +372,9 @@
                 files.password = passwd;
             }
             
-            for (name in files)
+            Object.keys(files).forEach(function(name) {
                 config[name] = files[name];
+            });
             
             json = Util.stringifyJSON(config) + '\n';