diff --git a/CHANGELOG.md b/CHANGELOG.md
index cec3ff489358908b8ca29f1808ccdc9f664c096f..75500f136c7091250357a1ccbdbd9f77eb1fc377 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 EV3WebController project news
 
+0.3 (2015-10-31)
+* detect if we are running on the EV3 as root;
+
 0.2 (2015-10-29)
 * Beta release. It is possible to control the robot in four directions;
 * minor improvements and bug fixed.
diff --git a/bootstrap.py b/bootstrap.py
index 3f9379600cd515376ac7024d46f9952fe1c4fedb..ad1b1072a1efec63cb984b374eb9ffbb42de02fd 100644
--- a/bootstrap.py
+++ b/bootstrap.py
@@ -15,6 +15,9 @@
 Required imports and code execution for basic functionning.
 """
 
+import os
+if os.geteuid() != 0:
+    raise Exception('You must run the application as root on the EV3.')
 import sys
 if 'threading' in sys.modules:
     raise Exception('threading module loaded before patching!')
diff --git a/web/__init__.py b/web/__init__.py
index 7515e114406a0bea60eb57c38814aa3428c91464..6e0f83498b47e60b064c3f7b161ba8f1bfb45f8e 100644
--- a/web/__init__.py
+++ b/web/__init__.py
@@ -13,7 +13,6 @@
 import os
 from flask import Flask
 
-#from ev3.ev3dev import Ev3Dev
 from ev3.ev3dev import Key, Motor
 from ev3.lego import LargeMotor
 from ev3.lego import TouchSensor
@@ -28,7 +27,6 @@ app.debug = True
 # Create a random secrey key so we can use sessions
 app.config['SECRET_KEY'] = os.urandom(12)
 
-#Ev3Dev.__init__()
 #head = None#Motor(port=Motor.PORT.A)
 right_wheel = None
 left_wheel  = None
@@ -39,7 +37,7 @@ try:
     left_wheel  = Motor(port=Motor.PORT.C)
     button = TouchSensor()
     ir_sensor = InfraredSensor()
-except Exception:
-    print("You must run the application as root on the EV3.")
+except Exception as e:
+    raise Exception('You must run the application on the EV3.')
 
 from web import views
diff --git a/web/views/views.py b/web/views/views.py
index 8925c8cde2f6e7a008653173b57a8918974f5bf4..095b5fc47f2e627dc9f9629898e496df0f2759ca 100644
--- a/web/views/views.py
+++ b/web/views/views.py
@@ -11,9 +11,9 @@
 # ***** END LICENSE BLOCK *****
 
 __author__ = "Cedric Bonhomme"
-__version__ = "$Revision: 0.2 $"
+__version__ = "$Revision: 0.3 $"
 __date__ = "$Date: 2014/12/15$"
-__revision__ = "$Date: 2015/10/29 $"
+__revision__ = "$Date: 2015/10/31 $"
 __copyright__ = "Copyright (c) 2014-2015 Cédric BOnhomme"
 __license__ = ""
 
@@ -47,10 +47,6 @@ def load_user(id):
     # Return an instance of the User model
     return models.User.objects(id=id).first()
 
-@app.before_request
-def before_request():
-    g.user = current_user
-
 
 @app.route('/move/<direction>', methods=['GET'])
 @app.route('/move/<direction>/<speed>', methods=['GET'])