diff --git a/addons/warning/warning.py b/addons/warning/warning.py
index 859dec8e1a2..927281a203a 100644
--- a/addons/warning/warning.py
+++ b/addons/warning/warning.py
@@ -21,6 +21,7 @@
 
 import time
 from osv import fields,osv
+from tools.translate import _
 
 WARNING_MESSAGE = [
                    ('no-message','No Message'),