diff --git a/specreduce/tests/test_utils.py b/specreduce/tests/test_utils.py
index f3e0988..191c38b 100644
--- a/specreduce/tests/test_utils.py
+++ b/specreduce/tests/test_utils.py
@@ -48,7 +48,8 @@ def test_measure_cross_dispersion_profile(self, pixel, width):
         Basic test for `measure_cross_dispersion_profile`. Parametrized over
         different options for `pixel` to test using all wavelengths, a single
         wavelength, and a set of wavelengths, as well as different input types
-        (plain array, quantity, Spectrum1D, and NDData).
+        (plain array, quantity, Spectrum1D, and NDData), as well as `width` to
+        use a window of all rows and a smaller window.
         """
 
         # test a few input formats