diff --git a/tests/requests/invalid/version_03.http b/tests/requests/invalid/version_03.http
new file mode 100644
index 000000000..a000b7b33
--- /dev/null
+++ b/tests/requests/invalid/version_03.http
@@ -0,0 +1,2 @@
+GET /foo HTTP/0.9\r\n
+\r\n
diff --git a/tests/requests/invalid/version_03.py b/tests/requests/invalid/version_03.py
new file mode 100644
index 000000000..760840b69
--- /dev/null
+++ b/tests/requests/invalid/version_03.py
@@ -0,0 +1,2 @@
+from gunicorn.http.errors import InvalidHTTPVersion
+request = InvalidHTTPVersion
diff --git a/tests/test_invalid_requests.py b/tests/test_invalid_requests.py
index a4748640f..71bfe9202 100644
--- a/tests/test_invalid_requests.py
+++ b/tests/test_invalid_requests.py
@@ -23,5 +23,6 @@ def test_http_parser(fname):
     cfg = env["cfg"]
     req = treq.badrequest(fname)
 
-    with pytest.raises(expect):
+    # telling pytest to match the exception string validates its __str__()
+    with pytest.raises(expect, match="."):
         req.check(cfg)