--- a/cytoolz/tests/test_inspect_args.py
+++ b/cytoolz/tests/test_inspect_args.py
@@ -503,4 +503,4 @@
         _sigs.signatures[Wrapped] = (_sigs.expand_sig((0, lambda func: None)),)
         assert num_required_args(Wrapped) == 1
     else:
-        assert num_required_args(Wrapped) is 1
+        assert num_required_args(Wrapped) == 1