diff --git a/config.py b/config.py
index 420f32e..327fb39 100644
--- a/config.py
+++ b/config.py
@@ -133,3 +133,8 @@ AUTHENTICATION_BACKENDS = ('authentic2.backends.LDAPBackend',)
 
 # bypass authentic2 warning: "DEFAULT_FROM_EMAIL must be customized"
 DEFAULT_FROM_EMAIL = 'root@localhost'
+
+if os.environ.get('DEBUG') == '1':
+    DEBUG = True
+    for logger in LOGGING['loggers'].values():
+        logger['level'] = 'DEBUG'
diff --git a/supann.conf b/supann.conf
index 23b7418..61d4df7 100644
--- a/supann.conf
+++ b/supann.conf
@@ -1,5 +1,9 @@
 # Fichier /etc/default/authentic2
 #
+# Activer le mode DEBUG
+#
+# export DEBUG=1
+#
 # Configuration du LDAP
 #
 # URL de l'annuaire LDAP