diff --git a/source/Ox.js b/source/Ox.js
index e72614ab..1ad65c0f 100644
--- a/source/Ox.js
+++ b/source/Ox.js
@@ -9,10 +9,11 @@
             var args = arguments,
                 callback = args[args.length - 1],
                 path = getPath(),
+                regexp = /dev\/$/,
                 time = +new Date();
 
-            if (args[0] === true) {
-                path = path.replace(/dev\/$/, 'build/');
+            if (args[0] === true && regexp.test(path)) {
+                path = path.replace(regexp, 'build/');
                 loadScript('Ox.js', function() {
                     Ox.PATH = path;
                     Ox.load.apply(null, Ox.slice(args, 1));