diff --git a/data/dem/mdbench_params.conf b/data/dem/mdbench_params.conf
index f9923ee..2c84fcf 100644
--- a/data/dem/mdbench_params.conf
+++ b/data/dem/mdbench_params.conf
@@ -3,6 +3,7 @@ pbc_y 0
 pbc_z 0
 ntimes 200
 dt 0.01
-reneigh_every 20
+reneigh_every 1
+mass 0.1
 k_s 100
 k_dn 10
diff --git a/lammps/thermo.c b/lammps/thermo.c
index 0fbbf41..69497a8 100644
--- a/lammps/thermo.c
+++ b/lammps/thermo.c
@@ -57,7 +57,7 @@ void setupThermo(Parameter *param, int natoms)
         t_scale = mvv2e / dof_boltz;
         p_scale = 1.0 / 3 / param->xprd / param->yprd / param->zprd;
         e_scale = 0.5;
-    } else {
+    } else if(param->force_field == FF_EAM) {
         mvv2e = 1.036427e-04;
         dof_boltz = (natoms * 3 - 3) * 8.617343e-05;
         t_scale = mvv2e / dof_boltz;