diff --git a/tutorials/cfdemSolverRhoPimpleChem/PolydisperseFluidizedBed/R2_FB/run.config b/tutorials/cfdemSolverRhoPimpleChem/PolydisperseFluidizedBed/R2_FB/run.config
index 032fedbb..74ab523b 100644
--- a/tutorials/cfdemSolverRhoPimpleChem/PolydisperseFluidizedBed/R2_FB/run.config
+++ b/tutorials/cfdemSolverRhoPimpleChem/PolydisperseFluidizedBed/R2_FB/run.config
@@ -4,12 +4,13 @@
     {
       "name" : "liggghts-init",
       "input_script" : "DEM/in.liggghts_init",
-      "type" : "liggghts/serial"
+      "type" : "liggghts/mpi",
+      "nprocs" : 4
     },
     {
       "name" : "cfdemrun",
       "depends_on" : "liggghts-init",
-      "solver" : "cfdemSolverPiso",
+      "solver" : "cfdemSolverRhoPimpleChem",
       "type" : "CFDEMcoupling/mpi",
       "nprocs" : 4,
       "pre_scripts" : ["prerun.sh"],