diff --git a/lib/constants.js b/lib/constants.js
index 49e380301..16ded781e 100644
--- a/lib/constants.js
+++ b/lib/constants.js
@@ -4,8 +4,8 @@ var pkg = JSON.parse(fs.readFileSync(__dirname + '/../package.json').toString())
 
 exports.VERSION = pkg.version;
 
-exports.DEFAULT_PORT = 9876;
-exports.DEFAULT_HOSTNAME = 'localhost';
+exports.DEFAULT_PORT = process.env.PORT || 9876;
+exports.DEFAULT_HOSTNAME = process.env.IP || 'localhost';
 
 // log levels
 exports.LOG_DISABLE = 'OFF';