1 files changed, 3 insertions, 1 deletions
diff --git a/tests/http/server/_base.py b/tests/http/server/_base.py
index 02b20b2cc8..b9f1a381aa 100644
--- a/tests/http/server/_base.py
+++ b/tests/http/server/_base.py
@@ -60,7 +60,9 @@ class EndpointCancellationTestHelperMixin(unittest.TestCase):
 
         request = channel.request
         self.assertFalse(
-            channel.is_finished(), "Request finished before we could disconnect"
+            channel.is_finished(),
+            "Request finished before we could disconnect - "
+            "was `await_result=False` passed to `make_request`?",
         )
 
         # We're about to disconnect the request. This also disconnects the channel, so