diff --git a/tests/interop/daemon.py b/tests/interop/daemon.py
index 5b8c791..607ec3a 100644
--- a/tests/interop/daemon.py
+++ b/tests/interop/daemon.py
@@ -30,7 +30,7 @@ async def try_until_success(coro_func, timeout=TIMEOUT_DURATION):
             break
         if (time.monotonic() - t_start) >= timeout:
             # timeout
-            assert False, f"{coro_func} still failed after `{timeout}` seconds"
+            assert False, f"{coro_func} is still failing after `{timeout}` seconds"
         await asyncio.sleep(0.01)