diff --git a/moulinette/interfaces/__init__.py b/moulinette/interfaces/__init__.py
index afd9a9f6..720b990a 100644
--- a/moulinette/interfaces/__init__.py
+++ b/moulinette/interfaces/__init__.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 
+import os
 import sys
 import errno
 import logging