diff --git a/tests/app/conftest.py b/tests/app/conftest.py
index b074ec7f9..fa17f3fd3 100644
--- a/tests/app/conftest.py
+++ b/tests/app/conftest.py
@@ -216,7 +216,7 @@ def sample_sms_code(notify_db_session):
     return code
 
 
-@pytest.fixture(scope="session")
+@pytest.fixture(scope="function")
 def sample_service(sample_user):
     service_name = "Sample service"
     email_from = service_name.lower().replace(" ", ".")
diff --git a/tests/app/service/test_rest.py b/tests/app/service/test_rest.py
index 7f138c286..0d60f3e8b 100644
--- a/tests/app/service/test_rest.py
+++ b/tests/app/service/test_rest.py
@@ -3134,12 +3134,12 @@ def test_update_service_sms_sender(client, notify_db_session):
     assert not resp_json["is_default"]
 
 
-@pytest.mark.usefixtures("client", "sample_service")
+@pytest.mark.usefixtures("client")
 @settings(max_examples=10)
 @pytest.mark.parametrize("client", [True], indirect=True)
 @given(sms_sender=st.text(min_size=0, max_size=50), is_default=st.booleans())
-def test_fuzz_update_service_sms_sender(client, sms_sender, is_default, sample_service):
-    service = sample_service
+def test_fuzz_update_service_sms_sender(client, sms_sender, is_default):
+    service = create_service()
     service_sms_sender = create_service_sms_sender(
         service=service, sms_sender="1235", is_default=False
     )
@@ -3165,6 +3165,12 @@ def test_fuzz_update_service_sms_sender(client, sms_sender, is_default, sample_s
         assert resp_json["sms_sender"] == sms_sender
         assert resp_json["is_default"] == is_default
 
+    client.post(
+        "service.delete_service_sms_sender",
+        service_id=service.id,
+        sms_sender_id=service_sms_sender.id,
+    )
+
 
 def test_update_service_sms_sender_switches_default(client, notify_db_session):
     service = create_service_with_defined_sms_sender(sms_sender_value="first")