diff --git a/erpnext/crm/doctype/opportunity/opportunity.py b/erpnext/crm/doctype/opportunity/opportunity.py
index 6ee95b020dc..8027cbc69cc 100644
--- a/erpnext/crm/doctype/opportunity/opportunity.py
+++ b/erpnext/crm/doctype/opportunity/opportunity.py
@@ -42,9 +42,6 @@ class Opportunity(TransactionBase):
 		if not self.with_items:
 			self.items = []
 
-		else:
-			self.calculate_totals()
-
 	def map_fields(self):
 		for field in self.meta.fields:
 			if not self.get(field.fieldname):
@@ -54,20 +51,6 @@ class Opportunity(TransactionBase):
 				except Exception:
 					continue
 
-	def calculate_totals(self):
-		total = base_total = 0
-		for item in self.get('items'):
-			item.amount = flt(item.rate) * flt(item.qty)
-			item.base_rate = flt(self.conversion_rate * item.rate)
-			item.base_amount = flt(self.conversion_rate * item.amount)
-			total += item.amount
-			base_total += item.base_amount
-
-		self.total = flt(total)
-		self.base_total = flt(base_total)
-		self.grand_total = flt(self.total) + flt(self.opportunity_amount)
-		self.base_grand_total = flt(self.base_total) + flt(self.base_opportunity_amount)
-
 	def make_new_lead_if_required(self):
 		"""Set lead against new opportunity"""
 		if (not self.get("party_name")) and self.contact_email: