diff --git a/tests/app/main/views/organisations/test_organisations.py b/tests/app/main/views/organisations/test_organisations.py
index 3f50d5684..7174d30bd 100644
--- a/tests/app/main/views/organisations/test_organisations.py
+++ b/tests/app/main/views/organisations/test_organisations.py
@@ -696,7 +696,7 @@ def test_download_organisation_usage_report(
                 'letter_cost': 30.5,
                 'sms_billable_units': 122,
                 'sms_cost': 1.934,
-                'sms_remainder': None
+                'sms_remainder': 0
             },
             {
                 'service_id': SERVICE_TWO_ID,
@@ -707,7 +707,7 @@ def test_download_organisation_usage_report(
                 'letter_cost': 60.5,
                 'sms_billable_units': 322,
                 'sms_cost': 3.935,
-                'sms_remainder': None
+                'sms_remainder': 0
             },
         ]}
     )
@@ -722,8 +722,8 @@ def test_download_organisation_usage_report(
     assert csv_report.string == (
         "Service ID,Service Name,Emails sent,Free text message allowance remaining,"
         "Spent on text messages (£),Spent on letters (£)"
-        "\r\n596364a0-858e-42c8-9062-a8fe822260eb,Service 1,13000,,1.93,30.50"
-        "\r\n147ad62a-2951-4fa1-9ca0-093cd1a52c52,Service 1,23000,,3.94,60.50\r\n"
+        "\r\n596364a0-858e-42c8-9062-a8fe822260eb,Service 1,13000,0,1.93,30.50"
+        "\r\n147ad62a-2951-4fa1-9ca0-093cd1a52c52,Service 1,23000,0,3.94,60.50\r\n"
     )