diff --git a/mache/spack/chrysalis_gnu_openmpi.yaml b/mache/spack/chrysalis_gnu_openmpi.yaml
index c6de3a5f..e6040bd4 100644
--- a/mache/spack/chrysalis_gnu_openmpi.yaml
+++ b/mache/spack/chrysalis_gnu_openmpi.yaml
@@ -139,7 +139,7 @@ spack:
         f77: /gpfs/fs1/soft/chrysalis/spack/opt/spack/linux-centos8-x86_64/gcc-9.3.0/gcc-9.2.0-ugetvbp/bin/gfortran
         fc: /gpfs/fs1/soft/chrysalis/spack/opt/spack/linux-centos8-x86_64/gcc-9.3.0/gcc-9.2.0-ugetvbp/bin/gfortran
       flags: {}
-      operating_system: rhel8
+      operating_system: centos8
       target: x86_64
       modules: []
       environment: {}
diff --git a/mache/spack/chrysalis_intel_impi.yaml b/mache/spack/chrysalis_intel_impi.yaml
index cd79fb08..2e562294 100644
--- a/mache/spack/chrysalis_intel_impi.yaml
+++ b/mache/spack/chrysalis_intel_impi.yaml
@@ -139,7 +139,7 @@ spack:
         f77: /gpfs/fs1/soft/chrysalis/spack/opt/spack/linux-centos8-x86_64/gcc-9.3.0/intel-20.0.4-kodw73g/compilers_and_libraries_2020.4.304/linux/bin/intel64/ifort
         fc: /gpfs/fs1/soft/chrysalis/spack/opt/spack/linux-centos8-x86_64/gcc-9.3.0/intel-20.0.4-kodw73g/compilers_and_libraries_2020.4.304/linux/bin/intel64/ifort
       flags: {}
-      operating_system: rhel8
+      operating_system: centos8
       target: x86_64
       modules: []
       environment: {}
diff --git a/mache/spack/chrysalis_intel_openmpi.yaml b/mache/spack/chrysalis_intel_openmpi.yaml
index 0c135552..f81973e7 100644
--- a/mache/spack/chrysalis_intel_openmpi.yaml
+++ b/mache/spack/chrysalis_intel_openmpi.yaml
@@ -139,7 +139,7 @@ spack:
         f77: /gpfs/fs1/soft/chrysalis/spack/opt/spack/linux-centos8-x86_64/gcc-9.3.0/intel-20.0.4-kodw73g/compilers_and_libraries_2020.4.304/linux/bin/intel64/ifort
         fc: /gpfs/fs1/soft/chrysalis/spack/opt/spack/linux-centos8-x86_64/gcc-9.3.0/intel-20.0.4-kodw73g/compilers_and_libraries_2020.4.304/linux/bin/intel64/ifort
       flags: {}
-      operating_system: rhel8
+      operating_system: centos8
       target: x86_64
       modules: []
       environment: {}