diff --git a/addons/stock/wizard/stock_partial_picking.py b/addons/stock/wizard/stock_partial_picking.py
index 50ddc2b88ed..ceedb682ed8 100644
--- a/addons/stock/wizard/stock_partial_picking.py
+++ b/addons/stock/wizard/stock_partial_picking.py
@@ -144,7 +144,7 @@ class stock_partial_picking(osv.osv_memory):
     def _partial_move_for(self, cr, uid, move):
         partial_move = {
             'product_id' : move.product_id.id,
-            'quantity' : move.product_qty if move.state == 'assigned' else 0,
+            'quantity' : move.product_qty if move.state == 'assigned' or move.picking_id.type == 'in' else 0,
             'product_uom' : move.product_uom.id,
             'prodlot_id' : move.prodlot_id.id,
             'move_id' : move.id,