diff --git a/src/submission/ChildProcess.jl b/src/submission/ChildProcess.jl
index 3d17c2a0e..c62af772f 100644
--- a/src/submission/ChildProcess.jl
+++ b/src/submission/ChildProcess.jl
@@ -72,11 +72,9 @@ function pigeons(pt_arguments, new_process::ChildProcess)
         # write("output.txt", merge(oc))
         run(julia_cmd, wait = new_process.wait)
     else
-        mpiexec() do exe
-            mpi_cmd = `$exe $(new_process.mpiexec_args) -n $(new_process.n_local_mpi_processes)`
-            cmd     = `$mpi_cmd $julia_cmd`
-            run(cmd, wait = new_process.wait)
-        end
+        mpi_cmd = `$(mpiexec()) $(new_process.mpiexec_args) -n $(new_process.n_local_mpi_processes)`
+        cmd     = `$mpi_cmd $julia_cmd`
+        run(cmd, wait = new_process.wait)
     end
     return Result{PT}(exec_folder)
 end
diff --git a/test/supporting/mpi_test_utils.jl b/test/supporting/mpi_test_utils.jl
index 7adeb0bb6..f521571ac 100644
--- a/test/supporting/mpi_test_utils.jl
+++ b/test/supporting/mpi_test_utils.jl
@@ -6,10 +6,8 @@ function mpi_test(n_processes::Int, test_file::String; options = [])
     project_dir = dirname(project_file)
     run(`$jl_cmd --project=$project_dir -e "using Pkg; Pkg.instantiate(); Pkg.precompile()"`)
     resolved_test_file = abspath(test_file)
-    mpiexec() do exe
-        mpi_args = extra_mpi_args()
-        run(`$exe $mpi_args -n $n_processes $jl_cmd -t 2 --project=$project_dir $resolved_test_file $options`)
-    end
+    mpi_args = extra_mpi_args()
+    run(`$(mpiexec()) $mpi_args -n $n_processes $jl_cmd -t 2 --project=$project_dir $resolved_test_file $options`)
 end
 
 function set_n_mpis_to_one_on_windows(default_n_mpis::Int)