diff --git a/tests/regression_tests/mgxs_library_specific_nuclides/test.py b/tests/regression_tests/mgxs_library_specific_nuclides/test.py
index 41ae0a6896..e749ca1378 100644
--- a/tests/regression_tests/mgxs_library_specific_nuclides/test.py
+++ b/tests/regression_tests/mgxs_library_specific_nuclides/test.py
@@ -25,9 +25,9 @@ class MGXSTestHarness(PyAPITestHarness):
         # openmc.mgxs.ARBITRARY_MATRIX_TYPES so we can see the code works,
         # but not use too much resources
         relevant_MGXS_TYPES += [
-            "(n,elastic)",  "(n,level)",  "(n,2n)",  "(n,na)",  "(n,nc)",
-            "(n,gamma)",  "(n,a)",  "(n,Xa)",  "heating",  "damage-energy",
-            "(n,n1)",  "(n,a0)",  "(n,nc) matrix",  "(n,n1) matrix",
+            "(n,elastic)", "(n,level)", "(n,2n)", "(n,na)", "(n,nc)",
+            "(n,gamma)", "(n,a)", "(n,Xa)", "heating", "damage-energy",
+            "(n,n1)", "(n,a0)", "(n,nc) matrix", "(n,n1) matrix",
             "(n,2n) matrix"]
         self.mgxs_lib.mgxs_types = tuple(relevant_MGXS_TYPES)
         self.mgxs_lib.energy_groups = energy_groups