diff --git a/mangopay/resources.py b/mangopay/resources.py
index 7bf3f54..e743e5f 100644
--- a/mangopay/resources.py
+++ b/mangopay/resources.py
@@ -294,6 +294,7 @@ class InstantConversion(BaseModel):
     credited_wallet = ForeignKeyField(Wallet, api_name='CreditedWalletId', required=True)
     debited_funds = MoneyField(api_name='DebitedFunds', required=True)
     credited_funds = MoneyField(api_name='CreditedFunds', required=True)
+    fees = MoneyField(api_name="Fees", required=True)
     conversion_rate = ConversionRateField(api_name='ConversionRate')
     type = CharField(api_name='Type', choices=constants.TRANSACTION_TYPE_CHOICES, default=None)
     nature = CharField(api_name='Nature', choices=constants.NATURE_CHOICES, default=None)
diff --git a/tests/test_instant_conversion.py b/tests/test_instant_conversion.py
index bdec96c..83f5a17 100644
--- a/tests/test_instant_conversion.py
+++ b/tests/test_instant_conversion.py
@@ -38,6 +38,7 @@ def test_create_instant_conversion(self):
         instant_conversion.debited_wallet = BaseTestLive.create_new_wallet_with_money()
         instant_conversion.credited_funds = credited_funds
         instant_conversion.debited_funds = debited_funds
+        instant_conversion.fees = Money(amount=9, currency='EUR')
         instant_conversion.tag = "instant conversion test"
 
         instant_conversion_response = instant_conversion.create_instant_conversion()
@@ -45,6 +46,7 @@ def test_create_instant_conversion(self):
         self.assertIsNotNone(instant_conversion_response)
         self.assertIsNotNone(instant_conversion_response['debited_funds'].amount)
         self.assertIsNotNone(instant_conversion_response['credited_funds'].amount)
+        self.assertIsNotNone(instant_conversion_response['fees'].amount)
         self.assertEqual(instant_conversion_response['status'], 'SUCCEEDED')
 
     def test_get_instant_conversion(self):