diff --git a/handler/tests/test_transactions.py b/handler/tests/test_transactions.py
index b99277d..eed6dbd 100644
--- a/handler/tests/test_transactions.py
+++ b/handler/tests/test_transactions.py
@@ -3,6 +3,7 @@ from unittest.mock import MagicMock
 from copy import deepcopy
 
 import transactions
+import money
 
 
 class TestTransactions(TestCase):
@@ -52,6 +53,12 @@ class TestTransactions(TestCase):
         self.transactions.money.get_rates_all = MagicMock()
         self.transactions.money.get_rates_all.return_value = {"GBP": 0.8}
 
+        # Don't mock the functions we want to test
+        self.money = money.Money()
+        self.money.get_rates_all = MagicMock()
+        self.money.get_rates_all.return_value = {"GBP": 0.8}
+        self.transactions.money.get_acceptable_margins = self.money.get_acceptable_margins
+
         self.trades = {
             1: {
                 "id": "uuid1",