diff --git a/src/Finance/ExchangeRateCalculator.php b/src/Finance/ExchangeRateCalculator.php
index 1b170b0..68ab912 100644
--- a/src/Finance/ExchangeRateCalculator.php
+++ b/src/Finance/ExchangeRateCalculator.php
@@ -41,7 +41,7 @@ class ExchangeRateCalculator
 
         $currentExchangeRate = null;
         foreach ($this->exchangeRates[$currency->getId()] as $exchangeRate) {
-            if ($exchangeRate->getValidFrom() > $time) {
+            if ($exchangeRate->getValidFromDate() > $time) {
                 break;
             }
             $currentExchangeRate = $exchangeRate;