diff --git a/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.py b/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.py
index 598db64..89f827a 100644
--- a/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.py
+++ b/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.py
@@ -252,8 +252,8 @@
 					new_balance_in_base_currency = 0
 					new_balance_in_account_currency = 0
 
-					current_exchange_rate = calculate_exchange_rate_using_last_gle(
-						company, d.account, d.party_type, d.party
+					current_exchange_rate = (
+						calculate_exchange_rate_using_last_gle(company, d.account, d.party_type, d.party) or 0.0
 					)
 
 					gain_loss = new_balance_in_account_currency - (