diff --git a/test/test_python_errors.py b/test/test_python_errors.py
index b3ac55d..cb453d5 100644
--- a/test/test_python_errors.py
+++ b/test/test_python_errors.py
@@ -364,5 +364,11 @@ def test_forbidden_name(template, target):
 
 def test_repeated_kwarg():
     # python 3.9+ shows which argument is repeated
-    assert "q" not in _get_error_list("f(q=1, q=2)", version="3.8")[0].message
-    assert "q" in _get_error_list("f(q=1, q=2)", version="3.9")[0].message
+    assert (
+        _get_error_list("f(q=1, q=2)", version="3.8")[0].message
+        == "SyntaxError: keyword argument repeated"
+    )
+    assert (
+        _get_error_list("f(q=1, q=2)", version="3.9")[0].message
+        == "SyntaxError: keyword argument repeated: q"
+    )