diff --git a/ci/cscs_eiger_spack_ssmp.yaml b/ci/cscs_eiger_spack_ssmp.yaml
index 5d91f6ac78..480f9df30a 100644
--- a/ci/cscs_eiger_spack_ssmp.yaml
+++ b/ci/cscs_eiger_spack_ssmp.yaml
@@ -65,7 +65,7 @@ test cp2k eiger:
   needs: ["build cp2k eiger"]
   timeout: 1h
   script:
-    - podman run --shm-size=1g -v ${PWD}:/mnt ${DOCKERHUB_IMAGE_NAME} mpiexec -genv OMP_NUM_THREADS=${SLURM_CPUS_PER_TASK} -n ${SLURM_NTASKS} cp2k /opt/cp2k/benchmarks/CI/H2O-32_md.inp
+    - podman run --env OMP_NUM_THREADS=${SLURM_CPUS_PER_TASK} --shm-size=1g -v ${PWD}:/mnt ${DOCKERHUB_IMAGE_NAME} cp2k /opt/cp2k/benchmarks/CI/H2O-32_md.inp
   variables:
     SLURM_CONSTRAINT: mc
     SLURM_CPUS_PER_TASK: 8
diff --git a/ci/cscs_eiger_toolchain_psmp.yaml b/ci/cscs_eiger_toolchain_psmp.yaml
index 911ca6457b..04a3ab6f1e 100644
--- a/ci/cscs_eiger_toolchain_psmp.yaml
+++ b/ci/cscs_eiger_toolchain_psmp.yaml
@@ -68,7 +68,7 @@ test cp2k eiger:
   needs: ["build cp2k eiger"]
   timeout: 1h
   script:
-    - podman run --shm-size=1g -v ${PWD}:/mnt ${DOCKERHUB_IMAGE_NAME} mpiexec -n ${SLURM_NTASKS} -genv OMP_NUM_THREADS=${SLURM_CPUS_PER_TASK} cp2k /opt/cp2k/benchmarks/CI/H2O-32_md.inp
+    - podman run --shm-size=1g -v ${PWD}:/mnt ${DOCKERHUB_IMAGE_NAME} mpiexec -genv OMP_NUM_THREADS=${SLURM_CPUS_PER_TASK} -n ${SLURM_NTASKS} cp2k /opt/cp2k/benchmarks/CI/H2O-32_md.inp
   variables:
     SLURM_CONSTRAINT: mc
     SLURM_CPUS_PER_TASK: 4