diff --git a/tests/test_utils_pv.py b/tests/test_utils_pv.py
index 20cc8f5e..bcf37c36 100644
--- a/tests/test_utils_pv.py
+++ b/tests/test_utils_pv.py
@@ -28,7 +28,7 @@ def run_test_ioc():
     prefix = "TEST:"
     ioc = TestIOC(prefix=prefix)
 
-    def start_ioc():
+    def start_ioc(): 
         asyncio.run(run(ioc.pvdb, startup_hook=None, interfaces=["127.0.0.1"]))
 
     thread = threading.Thread(target=start_ioc, daemon=True)