diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index 3796c82..1fae69f 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -400,4 +400,5 @@
 erpnext.patches.v8_0.update_customer_pos_id
 erpnext.patches.v8_0.rename_items_in_status_field_of_material_request
 erpnext.patches.v8_0.delete_bin_indexes
-erpnext.patches.v8_0.change_in_words_varchar_length
\ No newline at end of file
+erpnext.patches.v8_0.update_sales_cost_in_project
+erpnext.patches.v8_0.change_in_words_varchar_length
diff --git a/erpnext/patches/v8_0/update_sales_cost_in_project.py b/erpnext/patches/v8_0/update_sales_cost_in_project.py
new file mode 100644
index 0000000..cc3798e
--- /dev/null
+++ b/erpnext/patches/v8_0/update_sales_cost_in_project.py
@@ -0,0 +1,12 @@
+# Copyright (c) 2013, Web Notes Technologies Pvt. Ltd. and Contributors
+# License: GNU General Public License v3. See license.txt
+
+from __future__ import unicode_literals
+import frappe
+
+def execute():
+	frappe.db.sql("""
+		update `tabProject` p
+		set total_sales_cost = (select sum(base_grand_total) 
+			from `tabSales Order` where project=p.name and docstatus=1)
+	""")
\ No newline at end of file
diff --git a/erpnext/projects/doctype/project/project.py b/erpnext/projects/doctype/project/project.py
index 0345f05..de198a9 100644
--- a/erpnext/projects/doctype/project/project.py
+++ b/erpnext/projects/doctype/project/project.py
@@ -178,7 +178,7 @@
 		self.total_purchase_cost = total_purchase_cost and total_purchase_cost[0][0] or 0
 		
 	def update_sales_costing(self):
-		total_sales_cost = frappe.db.sql("""select sum(grand_total)
+		total_sales_cost = frappe.db.sql("""select sum(base_grand_total)
 			from `tabSales Order` where project = %s and docstatus=1""", self.name)
 
 		self.total_sales_cost = total_sales_cost and total_sales_cost[0][0] or 0