diff --git a/python/pyarrow/tests/test_csv.py b/python/pyarrow/tests/test_csv.py
index c45a590bf287c..6a36b41daf302 100644
--- a/python/pyarrow/tests/test_csv.py
+++ b/python/pyarrow/tests/test_csv.py
@@ -1504,7 +1504,7 @@ def signal_from_thread():
         assert last_duration <= 2.0
         e = exc_info.__context__
         assert isinstance(e, pa.ArrowCancelled)
-        assert e.signum == signum
+        assert e.signum == signal.SIGINT
 
     @pytest.mark.threading
     def test_cancellation_disabled(self):