diff --git a/series b/series
index dc6c6bf..a75ea7b 100644
--- a/series
+++ b/series
@@ -18,6 +18,7 @@ purchase_request.diff # [purchase_request] as shippment_date it's not required w
 issue4482.diff # [stock] stock inventory misses company access rule
 search_warehouse.diff #[stock] search function for warehouse.
 improve_performance_on_try_assign.diff # [stock] change browse of product to get default_uom to pysql
+stock_sync_outgoing_unit_price.diff # [stock] set unit price 0 when product list price is null
 
 issue240_631.diff # [stock_lot] stock_by_locations get all locations with that lot.
 issue10467.diff # stock_lot: add lot to grouping if lot it's required on product
diff --git a/stock_sync_outgoing_unit_price.diff b/stock_sync_outgoing_unit_price.diff
new file mode 100644
index 0000000..1f8d61f
--- /dev/null
+++ b/stock_sync_outgoing_unit_price.diff
@@ -0,0 +1,20 @@
+diff -r 01ad0c7e627f trytond/trytond/modules/stock/shipment.py
+--- a/trytond/trytond/modules/stock/shipment.py	Mon Feb 25 15:12:20 2019 +0100
++++ b/trytond/trytond/modules/stock/shipment.py	Mon Feb 25 15:13:34 2019 +0100
+@@ -5,6 +5,7 @@
+ import functools
+ import datetime
+ from collections import defaultdict
++from decimal import Decimal
+
+ from sql import Table, Null
+ from sql.functions import Overlay, Position
+@@ -1329,7 +1330,7 @@
+                 if not out_quantity:
+                     continue
+                 unit_price = Uom.compute_price(move.product.default_uom,
+-                        move.product.list_price, move.uom)
++                        move.product.list_price or Decimal('0'), move.uom)
+                 to_create.append(shipment._get_outgoing_move(move))
+                 to_create[-1].quantity = out_quantity
+                 to_create[-1].unit_price = unit_price