diff --git a/src/serve_rendered.js b/src/serve_rendered.js
index c98d924..82fcdcc 100644
--- a/src/serve_rendered.js
+++ b/src/serve_rendered.js
@@ -137,7 +137,7 @@ module.exports = function(options, repo, params, id) {
     });
   };
 
-  styleJSON = require(path.join(options.paths.styles, styleFile));
+  styleJSON = clone(require(path.join(options.paths.styles, styleFile)));
   styleJSON.sprite = 'sprites://' + path.basename(styleFile, '.json');
   styleJSON.glyphs = 'fonts://{fontstack}/{range}.pbf';
 
diff --git a/src/server.js b/src/server.js
index e9daa48..32e6e1e 100644
--- a/src/server.js
+++ b/src/server.js
@@ -45,7 +45,7 @@ module.exports = function(opts, callback) {
 
   var config;
   try {
-    config = require(configPath);
+    config = clone(require(configPath));
   } catch (e) {
     console.log('ERROR: Config file not found or invalid!');
     console.log('       See README.md for instructions and sample data.');