diff --git a/erpnext/selling/doctype/sales_order/sales_order.py b/erpnext/selling/doctype/sales_order/sales_order.py
index fb683a36324..d3ab2ac5a7d 100755
--- a/erpnext/selling/doctype/sales_order/sales_order.py
+++ b/erpnext/selling/doctype/sales_order/sales_order.py
@@ -645,12 +645,15 @@ def make_sales_invoice(source_name, target_doc=None, ignore_permissions=False):
 
 		if source_parent.project:
 			target.cost_center = frappe.db.get_value("Project", source_parent.project, "cost_center")
-		if not target.cost_center and target.item_code:
+		if target.item_code:
 			item = get_item_defaults(target.item_code, source_parent.company)
 			item_group = get_item_group_defaults(target.item_code, source_parent.company)
-			target.cost_center = item.get("selling_cost_center") \
+			cost_center = item.get("selling_cost_center") \
 				or item_group.get("selling_cost_center")
 
+			if cost_center:
+				target.cost_center = cost_center
+
 	doclist = get_mapped_doc("Sales Order", source_name, {
 		"Sales Order": {
 			"doctype": "Sales Invoice",