diff --git a/install-dev23a.sh b/install-dev23a.sh
index f7b56f694c302c12bb0d02a51910221a870b7b16..368bbe81ce54d878f252aad8f3d5b4eff654dbae 100644
--- a/install-dev23a.sh
+++ b/install-dev23a.sh
@@ -1,14 +1,15 @@
 #!/bin/bash
-#set -e
+set -e
 mkdir -p dev-23a
 cd dev-23a
 # clone repo if it doesn't exist yet
-[ ! -d 'spack-environments' ] && git clone git@gitlab.gwdg.de:mpsd-cs/spack-environments.git 
-pushd spack-environments && git checkout dev-23a && popd
+[ -d 'spack-environments' ] || git clone git@gitlab.gwdg.de:mpsd-cs/spack-environments.git 
+pushd spack-environments
+git checkout dev-23a
+popd
 mkdir -p sandybridge
 cd sandybridge
 ../spack-environments/spack_setup.sh -b global 
 ../spack-environments/spack_setup.sh foss2021a-serial
 ../spack-environments/spack_setup.sh foss2021a-mpi
 ../spack-environments/spack_setup.sh foss2021a-cuda-mpi
-