diff --git a/erpnext/projects/doctype/project/project.json b/erpnext/projects/doctype/project/project.json
index 205f895..7d47db3 100644
--- a/erpnext/projects/doctype/project/project.json
+++ b/erpnext/projects/doctype/project/project.json
@@ -108,7 +108,7 @@
    "fieldname": "percent_complete_method",
    "fieldtype": "Select",
    "label": "% Complete Method",
-   "options": "Task Completion\nTask Progress\nTask Weight"
+   "options": "Manual\nTask Completion\nTask Progress\nTask Weight"
   },
   {
    "bold": 1,
diff --git a/erpnext/projects/doctype/project/project.py b/erpnext/projects/doctype/project/project.py
index 6176cf8..783bcf3 100644
--- a/erpnext/projects/doctype/project/project.py
+++ b/erpnext/projects/doctype/project/project.py
@@ -87,6 +87,11 @@
 			frappe.db.set_value("Sales Order", self.sales_order, "project", self.name)
 
 	def update_percent_complete(self):
+		if self.percent_complete_method == "Manual":
+			if self.status == "Completed":
+				self.percent_complete = 100
+			return
+
 		total = frappe.db.count('Task', dict(project=self.name))
 
 		if not total: