diff --git a/stock_orderpoint_origin/models/procurement_group.py b/stock_orderpoint_origin/models/procurement_group.py
index e15bd0e504a8..6bb72452a95c 100644
--- a/stock_orderpoint_origin/models/procurement_group.py
+++ b/stock_orderpoint_origin/models/procurement_group.py
@@ -29,14 +29,23 @@ def run(self, procurements, raise_user_error=True):
                 # stock.picking object doesn't have field procurement_group_id,
                 # so we check if the source document is a picking to use the
                 # correct field (group_id)
-                source_groups = [
-                    x.procurement_group_id if x._name != "stock.picking" else x.group_id
-                    for x in source_docs
-                ]
+                source_groups = []
+                for source_doc in source_docs:
+                    if (
+                        source_doc.procurement_group_id
+                        if source_doc._name != "stock.picking"
+                        else source_doc.group_id
+                    ):
+                        source_groups.append(
+                            source_doc.procurement_group_id
+                            if source_doc._name != "stock.picking"
+                            else source_doc.group_id
+                        )
                 source_names = ", ".join([x.name for x in source_docs])
                 new_origin = "%s (from %s)" % (source_names, procurement.origin)
                 new_procurement = procurement._replace(origin=new_origin)
-                new_procurement.values["source_group_ids"] = source_groups
+                if source_groups:
+                    new_procurement.values["source_group_ids"] = source_groups
                 new_procurements.append(new_procurement)
             else:
                 new_procurements.append(procurement)