diff --git a/tests/test_unproject_layout.py b/tests/test_unproject_layout.py
index 759431a9..552a5e1a 100644
--- a/tests/test_unproject_layout.py
+++ b/tests/test_unproject_layout.py
@@ -96,6 +96,15 @@ def test_BitMaskedArray():
     compare_values(projected, unprojected)
 
     form = ak.forms.BitMaskedForm('u8', ak.forms.NumpyForm('int64'), valid_when=True, lsb_order=True)
+    unprojected = unproject_layout(form, projected)
+    compare_values(projected, unprojected)
+
+def test_ByteMaskedArray():
+    form = ak.forms.ByteMaskedForm('u8', ak.forms.NumpyForm('int64'), valid_when=False)
     projected = ak.contents.UnmaskedArray(ak.from_iter([1, 2, 3, 4], highlevel=False))
     unprojected = unproject_layout(form, projected)
     compare_values(projected, unprojected)
+
+    form = ak.forms.ByteMaskedForm('u8', ak.forms.NumpyForm('int64'), valid_when=True)
+    unprojected = unproject_layout(form, projected)
+    compare_values(projected, unprojected)