diff --git a/lammps_simulator/computer.py b/lammps_simulator/computer.py
index 04a2de2..d084d57 100644
--- a/lammps_simulator/computer.py
+++ b/lammps_simulator/computer.py
@@ -201,7 +201,6 @@ def __init__(self, gpu_per_node=1, lmp_exec="lmp", lmp_args={},
                                 "-sf": "kk"}
         elif mode == "gpu":
             default_lmp_args = {"-pk": "gpu newton on neigh full",
-                                "-k": f"on g {self.gpu_per_node}",
                                 "-sf": "gpu"}
         else:
             raise NotImplementedError