diff --git a/erpnext/domains/stocks.yaml b/erpnext/domains/stocks.yaml
index 6fd54d972d5e2958d153e89cbd9cdc1012e497b7..cc26f7c8727ce6d7d6fee6d7f0ed63d18bc7ba92 100644
--- a/erpnext/domains/stocks.yaml
+++ b/erpnext/domains/stocks.yaml
@@ -24,6 +24,14 @@ restricted_fields:
   Item Default:
     - default_warehouse
 
+
+properties:
+  - doctype: "Sales Invoice Item"
+    fieldname: "conversion_factor"
+    property: "default"
+    value: 1
+
+
 modules:
   - Stock