diff --git a/swarmlab-app/src/run/app.js b/swarmlab-app/src/run/app.js
index e6512e9..82da576 100755
--- a/swarmlab-app/src/run/app.js
+++ b/swarmlab-app/src/run/app.js
@@ -1,3 +1,5 @@
+"use strict"
+
 var pathmodule = require('path');
 var app = require('express')();
 var http = require('http').Server(app);