diff --git a/tests/unit_tests/test_data_neutron.py b/tests/unit_tests/test_data_neutron.py
index 48ea117d8..0b33f05fc 100644
--- a/tests/unit_tests/test_data_neutron.py
+++ b/tests/unit_tests/test_data_neutron.py
@@ -219,6 +219,7 @@ def test_derived_products(am244):
     assert total_neutron.yield_(6e6) == pytest.approx(4.2558)
 
 
+@needs_njoy
 def test_kerma(run_in_tmpdir, am244, h2):
     # Make sure kerma w/ local photon is >= regular kerma
     for nuc in (am244, h2):