diff --git a/tests/unit/daq/test_aare_daq_loop_centering.py b/tests/unit/daq/test_aare_daq_loop_centering.py
index dc6fbe9a..f35da017 100644
--- a/tests/unit/daq/test_aare_daq_loop_centering.py
+++ b/tests/unit/daq/test_aare_daq_loop_centering.py
@@ -23,7 +23,7 @@ def test_execute_loop_centering_rejects_invalid_sample():
 def test_execute_loop_centering_handles_service_failure():
     daq = object.__new__(AareDAQ)
     daq._AareDAQ__set_state = MagicMock()
-    daq._AareDAQ__devs = MagicMock()
+    daq._AareDAQ__devs = types.SimpleNamespace(lamp_light=None)
     daq._AareDAQ__aare = MagicMock()
     daq._handle_operation_error = MagicMock()
     daq.save_screenshot_db = MagicMock()
diff --git a/tests/unit/daq/test_face_detection.py b/tests/unit/daq/test_face_detection.py
index 2755f323..2ec9c9c7 100644
--- a/tests/unit/daq/test_face_detection.py
+++ b/tests/unit/daq/test_face_detection.py
@@ -89,7 +89,7 @@ def test_public_face_detection_uses_execute_face_detection(monkeypatch):
     )
     setattr(daq, "_AareDAQ__cfg", cfg)
 
-    monkeypatch.setattr(
+    setattr(
         daq,
         "_execute_face_detection",
         lambda **kwargs: FaceDetectionResult(