diff --git a/tests/common/beamlines/test_beamline_utils.py b/tests/common/beamlines/test_beamline_utils.py
index 584742b9bdc..21ba692aaf5 100644
--- a/tests/common/beamlines/test_beamline_utils.py
+++ b/tests/common/beamlines/test_beamline_utils.py
@@ -19,7 +19,8 @@
 
 
 @pytest.fixture(autouse=True)
-def flush_event_loop_on_finish(event_loop):
+def flush_event_loop_on_finish():
+    event_loop = asyncio.get_event_loop()
     # wait for the test function to complete
     yield None
 
diff --git a/tests/devices/unit_tests/i03/test_undulator_dcm.py b/tests/devices/unit_tests/i03/test_undulator_dcm.py
index 16f4d7b745b..553b00ea426 100644
--- a/tests/devices/unit_tests/i03/test_undulator_dcm.py
+++ b/tests/devices/unit_tests/i03/test_undulator_dcm.py
@@ -16,7 +16,8 @@
 
 
 @pytest.fixture(autouse=True)
-def flush_event_loop_on_finish(event_loop):
+def flush_event_loop_on_finish():
+    event_loop = asyncio.get_event_loop()
     # wait for the test function to complete
     yield None