diff --git a/tests/unit/test_event_controller.py b/tests/unit/test_event_controller.py
index 171ed9f18..fd2b226be 100644
--- a/tests/unit/test_event_controller.py
+++ b/tests/unit/test_event_controller.py
@@ -92,7 +92,7 @@ class StreamControllerTestCase(AsyncioTestCase):
 class TestEventQueuePublisher(AsyncioTestCase):
 
     async def test_event_buffering_avoids_overloading_asyncio(self):
-        threads = 3
+        threads = 2
         generate_events = 2000
         expected_event_count = (threads * generate_events)-1