diff --git a/tests/unit_tests/hyperion/test_main_system.py b/tests/unit_tests/hyperion/test_main_system.py
index 991e93f02..e3fb73624 100644
--- a/tests/unit_tests/hyperion/test_main_system.py
+++ b/tests/unit_tests/hyperion/test_main_system.py
@@ -549,7 +549,7 @@ def test_when_context_created_then_contains_expected_number_of_plans(
     get_beamline_parameters,
 ):
     with patch.dict(os.environ, {"BEAMLINE": "i03"}):
-        context = setup_context(wait_for_connection=False)
+        context = setup_context(wait_for_connection=False, fake_with_ophyd_sim=True)
 
         plan_names = context.plans.keys()