diff --git a/psblas3.spec b/psblas3.spec
index fd56cbb..43d27f4 100644
--- a/psblas3.spec
+++ b/psblas3.spec
@@ -463,8 +463,8 @@ pushd openmpi-build/test/hello
 export LD_LIBRARY_PATH=$RPM_BUILD_ROOT$MPI_LIB
 export LDFLAGS="%{__global_ldflags}"
 make
-mpirun %{?fedora: -np `/usr/bin/getconf _NPROCESSORS_ONLN`} %{?el8: --use-hwthread-cpus} ./runs/hello
-mpirun %{?fedora: -np `/usr/bin/getconf _NPROCESSORS_ONLN`} %{?el8: --use-hwthread-cpus} ./runs/pingpong
+mpirun --use-hwthread-cpus ./runs/hello
+mpirun --use-hwthread-cpus ./runs/pingpong
 %{_openmpi_unload}
 popd
 %endif