diff --git a/moulinette/__init__.py b/moulinette/__init__.py
index 1dfeb213..0ec41a3c 100755
--- a/moulinette/__init__.py
+++ b/moulinette/__init__.py
@@ -1,6 +1,5 @@
 # -*- coding: utf-8 -*-
 
-from os import environ
 from moulinette.core import (
     MoulinetteError,
     Moulinette18n,
diff --git a/moulinette/actionsmap.py b/moulinette/actionsmap.py
index 3468e029..52023a56 100644
--- a/moulinette/actionsmap.py
+++ b/moulinette/actionsmap.py
@@ -17,7 +17,6 @@ from moulinette.cache import open_cachefile
 from moulinette.core import (
     MoulinetteError,
     MoulinetteLock,
-    MoulinetteAuthenticationError,
     MoulinetteValidationError,
 )
 from moulinette.interfaces import BaseActionsMapParser, TO_RETURN_PROP
diff --git a/moulinette/authentication.py b/moulinette/authentication.py
index f555fd33..e7b98917 100644
--- a/moulinette/authentication.py
+++ b/moulinette/authentication.py
@@ -1,11 +1,5 @@
 # -*- coding: utf-8 -*-
 
-import os
-import logging
-import hashlib
-import hmac
-
-from moulinette.utils.text import random_ascii
 from moulinette.core import MoulinetteError, MoulinetteAuthenticationError
 
 logger = logging.getLogger("moulinette.authenticator")
diff --git a/moulinette/interfaces/api.py b/moulinette/interfaces/api.py
index fdf9ef67..2bfe5365 100644
--- a/moulinette/interfaces/api.py
+++ b/moulinette/interfaces/api.py
@@ -516,7 +516,7 @@ class _ActionsMapPlugin(object):
 
     def display(self, message, style="info"):
 
-        s_id = Sesson.get_infos()["id"]
+        s_id = Session.get_infos()["id"]
         try:
             queue = self.log_queues[s_id]
         except KeyError:
diff --git a/test/test_auth.py b/test/test_auth.py
index ee6940c5..a432afed 100644
--- a/test/test_auth.py
+++ b/test/test_auth.py
@@ -1,4 +1,3 @@
-import os
 import pytest
 
 from moulinette import MoulinetteError