diff --git a/atomistics/calculators/__init__.py b/atomistics/calculators/__init__.py
index 7836bc7d..39cec215 100644
--- a/atomistics/calculators/__init__.py
+++ b/atomistics/calculators/__init__.py
@@ -37,44 +37,38 @@
 except ImportError:
     pass
 
-try:
-    from atomistics.calculators.lammps import (
-        calc_molecular_dynamics_thermal_expansion_with_lammps,
-        calc_molecular_dynamics_nph_with_lammps,
-        calc_molecular_dynamics_npt_with_lammps,
-        calc_molecular_dynamics_nvt_with_lammps,
-        calc_molecular_dynamics_langevin_with_lammps,
-        calc_static_with_lammps,
-        evaluate_with_lammps,
-        evaluate_with_lammps_library,
-        get_potential_dataframe,
-        get_potential_by_name,
-        optimize_positions_and_volume_with_lammps,
-        optimize_positions_with_lammps,
-    )
+from atomistics.calculators.lammps import (
+    calc_molecular_dynamics_thermal_expansion_with_lammps,
+    calc_molecular_dynamics_nph_with_lammps,
+    calc_molecular_dynamics_npt_with_lammps,
+    calc_molecular_dynamics_nvt_with_lammps,
+    calc_molecular_dynamics_langevin_with_lammps,
+    calc_static_with_lammps,
+    evaluate_with_lammps,
+    evaluate_with_lammps_library,
+    get_potential_dataframe,
+    get_potential_by_name,
+    optimize_positions_and_volume_with_lammps,
+    optimize_positions_with_lammps,
+)
 
-    __all__ += [
-        calc_molecular_dynamics_thermal_expansion_with_lammps,
-        calc_molecular_dynamics_nph_with_lammps,
-        calc_molecular_dynamics_npt_with_lammps,
-        calc_molecular_dynamics_nvt_with_lammps,
-        calc_molecular_dynamics_langevin_with_lammps,
-        calc_static_with_lammps,
-        evaluate_with_lammps,
-        evaluate_with_lammps_library,
-        get_potential_dataframe,
-        get_potential_by_name,
-        optimize_positions_and_volume_with_lammps,
-        optimize_positions_with_lammps,
-    ]
-except ImportError:
-    pass
+__all__ += [
+    calc_molecular_dynamics_thermal_expansion_with_lammps,
+    calc_molecular_dynamics_nph_with_lammps,
+    calc_molecular_dynamics_npt_with_lammps,
+    calc_molecular_dynamics_nvt_with_lammps,
+    calc_molecular_dynamics_langevin_with_lammps,
+    calc_static_with_lammps,
+    evaluate_with_lammps,
+    evaluate_with_lammps_library,
+    get_potential_dataframe,
+    get_potential_by_name,
+    optimize_positions_and_volume_with_lammps,
+    optimize_positions_with_lammps,
+]
 
-try:
-    from atomistics.calculators.lammps.phonon import (
-        calc_molecular_dynamics_phonons_with_lammps,
-    )
+from atomistics.calculators.lammps.phonon import (
+    calc_molecular_dynamics_phonons_with_lammps,
+)
 
-    __all__ += [calc_molecular_dynamics_phonons_with_lammps]
-except ImportError:
-    pass
+__all__ += [calc_molecular_dynamics_phonons_with_lammps]