diff --git a/src/Run.jl b/src/Run.jl
index 223a702..6176240 100644
--- a/src/Run.jl
+++ b/src/Run.jl
@@ -1,27 +1,15 @@
 module Run
 # module to run LaMEM_jll
-using LaMEM_jll,Glob
+using LaMEM_jll,Glob, MPI
 
-export run_lamem, run_lamem_save_grid, mpiexec
+export run_lamem, run_lamem_save_grid
 export remove_popup_messages_mac, show_paths_LaMEM
 
 include("run_lamem.jl")
 include("run_lamem_save_grid.jl")
 include("utils_Run.jl")
 
-# load the correct MPI
-const mpiexec = if isdefined(LaMEM_jll,:MPICH_jll)
-    LaMEM_jll.MPICH_jll.mpiexec()
-elseif isdefined(LaMEM_jll,:MicrosoftMPI_jll) 
-    LaMEM_jll.MicrosoftMPI_jll.mpiexec()
-elseif isdefined(LaMEM_jll,:OpenMPI_jll) 
-    LaMEM_jll.OpenMPI_jll.mpiexec()
-elseif isdefined(LaMEM_jll,:MPItrampoline_jll) 
-    LaMEM_jll.MPItrampoline_jll.mpiexec()
-else
-    println("Be careful! No MPI library detected; parallel runs won't work")
-    nothing
-end
+const mpiexec = MPI.mpiexec()
 
 
 end
\ No newline at end of file
diff --git a/src/run_lamem.jl b/src/run_lamem.jl
index 0647f39..be7b3af 100644
--- a/src/run_lamem.jl
+++ b/src/run_lamem.jl
@@ -15,7 +15,6 @@ function deactivate_multithreading(cmd::Cmd)
     # does not work well. Switch that off:
     cmd = addenv(cmd,"OMP_NUM_THREADS"=>1)
     cmd = addenv(cmd,"VECLIB_MAXIMUM_THREADS"=>1)
-
     return cmd
 end
 
@@ -57,10 +56,10 @@ function run_lamem(ParamFile::String, cores::Int64=1, args::String=""; wait=true
         run(cmd, wait=wait);
     else
         # set correct environment
-        mpirun = setenv(mpiexec, LaMEM_jll.JLLWrappers.JLLWrappers.LIBPATH_env=>LaMEM_jll.LIBPATH[]);
+        mpirun = setenv(mpiexec,  LaMEM_jll.LaMEM().env);
 
         # create command-line object
-        cmd = `$(mpirun) -n $cores_compute $(LaMEM_jll.LaMEM_path) -ParamFile $(ParamFile) $args`
+        cmd = `$(mpirun) -n $cores_compute $(LaMEM_jll.LaMEM().exec) -ParamFile $(ParamFile) $args`
         if deactivate_multithreads
             cmd = deactivate_multithreading(cmd)
         end