diff --git a/erpnext/manufacturing/doctype/bom/bom.json b/erpnext/manufacturing/doctype/bom/bom.json
index 0cf7dc4..79c883a 100644
--- a/erpnext/manufacturing/doctype/bom/bom.json
+++ b/erpnext/manufacturing/doctype/bom/bom.json
@@ -642,6 +642,7 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
+   "default": "Valuation Rate", 
    "fieldname": "rm_cost_as_per", 
    "fieldtype": "Select", 
    "hidden": 0, 
@@ -1977,7 +1978,7 @@
  "issingle": 0, 
  "istable": 0, 
  "max_attachments": 0, 
- "modified": "2018-12-13 17:45:44.843197", 
+ "modified": "2019-01-30 16:39:34.353721", 
  "modified_by": "Administrator", 
  "module": "Manufacturing", 
  "name": "BOM", 
diff --git a/erpnext/manufacturing/doctype/bom/bom.py b/erpnext/manufacturing/doctype/bom/bom.py
index 2317634..ba3b7192 100644
--- a/erpnext/manufacturing/doctype/bom/bom.py
+++ b/erpnext/manufacturing/doctype/bom/bom.py
@@ -163,6 +163,8 @@
 	def get_rm_rate(self, arg):
 		"""	Get raw material rate as per selected method, if bom exists takes bom cost """
 		rate = 0
+		if not self.rm_cost_as_per:
+			self.rm_cost_as_per = "Valuation Rate"
 
 		if arg.get('scrap_items'):
 			rate = self.get_valuation_rate(arg)