diff --git a/erpnext/domains/stocks.yaml b/erpnext/domains/stocks.yaml
index 76c011abb8af361f2b4f19e0b2c508d26763a367..09acac69be9465ed2607ce243d8c34a156f707b6 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