diff --git a/tests/unit/test_zarrdataio.py b/tests/unit/test_zarrdataio.py
index 2f820fdf..f52f2f5c 100644
--- a/tests/unit/test_zarrdataio.py
+++ b/tests/unit/test_zarrdataio.py
@@ -110,7 +110,7 @@ def test_hdf5_to_zarr_filters_other_unsupported(self):
             **hdf5plugin.FciDecomp())
         # test that we warn due to the FciDecomp
         msg = r"/test_fcidecomp HDF5 filter id 32018 with properties .* ignored in Zarr."
-        with self.assertWarnsWith(UserWarning, msg):
+        with self.assertWarnsRegex(UserWarning, msg):
             filters = ZarrDataIO.hdf5_to_zarr_filters(h5dset_FciDecomp)
         self.assertEqual(len(filters), 0)
         # Close the HDF5 file