diff --git a/pyiron_atomistics/atomistics/master/murnaghan.py b/pyiron_atomistics/atomistics/master/murnaghan.py
index 47ed98a84..67771425e 100644
--- a/pyiron_atomistics/atomistics/master/murnaghan.py
+++ b/pyiron_atomistics/atomistics/master/murnaghan.py
@@ -98,7 +98,7 @@ def parameter_list(self):
             basis = _strain_axes(
                 structure=self._master.structure,
                 axes=self._master.input["axes"],
-                volume_strain=strain
+                volume_strain=strain,
             )
             parameter_lst.append([1 + np.round(strain, 7), basis])
         return parameter_lst
@@ -470,7 +470,7 @@ def _get_structure(self, frame=-1, wrap_atoms=True):
             return _strain_axes(
                 structure=self.structure,
                 axes=self.input["axes"],
-                volume_strain=vol_strain
+                volume_strain=vol_strain,
             )
         elif frame == 0:
             return self.structure