diff --git a/nixos/tests/slurm.nix b/nixos/tests/slurm.nix
index a6b02e970b0c..ad516b6e8d2b 100644
--- a/nixos/tests/slurm.nix
+++ b/nixos/tests/slurm.nix
@@ -45,7 +45,7 @@ let
       '';
     in pkgs.runCommand "mpitest" {} ''
       mkdir -p $out/bin
-      ${pkgs.openmpi}/bin/mpicc ${mpitestC} -o $out/bin/mpitest
+      ${lib.getDev pkgs.mpi}/bin/mpicc ${mpitestC} -o $out/bin/mpitest
     '';
 in {
   name = "slurm";