diff --git a/addons/stock/wizard/wizard_partial_picking.py b/addons/stock/wizard/wizard_partial_picking.py
index a93a8981a18..6efde5782cf 100644
--- a/addons/stock/wizard/wizard_partial_picking.py
+++ b/addons/stock/wizard/wizard_partial_picking.py
@@ -28,6 +28,7 @@ import pooler
 import wizard
 from osv import osv
 import tools
+from tools.translate import _
 
 _moves_arch = UpdateableStr()
 _moves_fields = UpdateableDict()