diff --git a/erpnext/accounts/report/financial_ratios/financial_ratios.py b/erpnext/accounts/report/financial_ratios/financial_ratios.py
index 57421eb..47b4fd0 100644
--- a/erpnext/accounts/report/financial_ratios/financial_ratios.py
+++ b/erpnext/accounts/report/financial_ratios/financial_ratios.py
@@ -177,8 +177,8 @@
 	return_on_equity_ratio = {"ratio": "Return on Equity Ratio"}
 
 	for year in years:
-		profit_after_tax = total_income[year] + total_expense[year]
-		share_holder_fund = total_asset[year] - total_liability[year]
+		profit_after_tax = flt(total_income.get(year)) + flt(total_expense.get(year))
+		share_holder_fund = flt(total_asset.get(year)) - flt(total_liability.get(year))
 
 		debt_equity_ratio[year] = calculate_ratio(
 			total_liability.get(year), share_holder_fund, precision