diff --git a/src/test/java/zw/qantra/tm/domain/services/TransactionServiceTest.java b/src/test/java/zw/qantra/tm/domain/services/TransactionServiceTest.java
index 3ef997a..a4109d7 100644
--- a/src/test/java/zw/qantra/tm/domain/services/TransactionServiceTest.java
+++ b/src/test/java/zw/qantra/tm/domain/services/TransactionServiceTest.java
@@ -122,10 +122,13 @@ class TransactionServiceTest {
     @Test
     @DisplayName("Should calculate credit amount using bank rate")
     void shouldCalculateCreditAmount() {
-        Currency currency = new Currency();
-        currency.setBankRate("15.0");
+        Currency currencyUsd = new Currency();
+        currencyUsd.setBankRate("1.0");
+        Currency currencyZwl = new Currency();
+        currencyZwl.setBankRate("15.0");
 
-        when(currencyService.findCurrencyByIsoCode("ZWL")).thenReturn(currency);
+        when(currencyService.findCurrencyByIsoCode("USD")).thenReturn(currencyUsd);
+        when(currencyService.findCurrencyByIsoCode("ZWL")).thenReturn(currencyZwl);
 
         BigDecimal creditAmount = transactionService.calculateCreditAmount(transaction);