diff --git a/openmc/geometry.py b/openmc/geometry.py
index eb7fa8200a..a9817fbbb8 100644
--- a/openmc/geometry.py
+++ b/openmc/geometry.py
@@ -267,7 +267,7 @@ class Geometry:
         ----------
         path : PathLike, optional
             Path to geometry XML file
-        materials : openmc.Materials or or PathLike
+        materials : openmc.Materials or PathLike
             Materials used to assign to cells. If PathLike, an attempt is made
             to generate materials from the provided xml file.
 
diff --git a/tests/unit_tests/test_geometry.py b/tests/unit_tests/test_geometry.py
index 843c01defd..0e952ab0f8 100644
--- a/tests/unit_tests/test_geometry.py
+++ b/tests/unit_tests/test_geometry.py
@@ -290,7 +290,6 @@ def test_from_xml(run_in_tmpdir, mixed_lattice_model):
         geom = openmc.Geometry.from_xml(path='geometry.xml', materials=None)
     assert 'Unable to set "materials" to "None"' in str(excinfo.value)
 
-
     # checking that the default args also work
     geom = openmc.Geometry.from_xml()
     assert isinstance(geom, openmc.Geometry)