diff --git a/modules/automation/automation.py b/modules/automation/automation.py
index 4601771..d495b58 100644
--- a/modules/automation/automation.py
+++ b/modules/automation/automation.py
@@ -308,7 +308,7 @@ class AutomationDocument(ModelSQL, ModelView, Workflow):
                                 d = ContractDetail()
                                 ct.type = 'Purchase'
                                 ct.matched = True
-                                ct.shipment_in = sh
+                                ct.shipment_in = sh[0]
                                 ct.lot = sale_line.lots[0]
                                 ct.product = sale_line.product
                                 ct.unit = sale_line.unit