diff --git a/addons/stock/report/picking.rml b/addons/stock/report/picking.rml
index cfc9964ddb9..ead7f0533f4 100644
--- a/addons/stock/report/picking.rml
+++ b/addons/stock/report/picking.rml
@@ -152,7 +152,7 @@
[[repeatIn(objects,'picking')]]
- [[picking.type == 'out' and setLang(picking.partner_id and picking.partner_id.lang or user.lang) or setLang(user.lang)]]
+ [[picking.type == 'out' and setLang(picking.partner_id and picking.partner_id.lang or user.lang) or '']]