diff --git a/erpnext/stock/stock_ledger.py b/erpnext/stock/stock_ledger.py
index 336f777ef32d0f6e8f579f6df20fdf8fda4afb6d..0d6e5618bdd339113723b51d47ea979871db27a0 100644
--- a/erpnext/stock/stock_ledger.py
+++ b/erpnext/stock/stock_ledger.py
@@ -923,10 +923,8 @@ class update_entries_after(object):
 				# else it remains the same as that of previous entry
 				self.wh_data.valuation_rate = new_stock_value / new_stock_qty
 
-		if not self.wh_data.valuation_rate and sle.voucher_detail_no:
-			allow_zero_rate = self.check_if_allow_zero_valuation_rate(
-				sle.voucher_type, sle.voucher_detail_no
-			)
+		if self.wh_data.valuation_rate is None and sle.voucher_detail_no:
+			allow_zero_rate = self.check_if_allow_zero_valuation_rate(sle.voucher_type, sle.voucher_detail_no)
 			if not allow_zero_rate:
 				self.wh_data.valuation_rate = self.get_fallback_rate(sle)