diff --git a/share/spack/gitlab/cloud_pipelines/stacks/aws-pcluster-x86_64_v4/packages.yaml b/share/spack/gitlab/cloud_pipelines/stacks/aws-pcluster-x86_64_v4/packages.yaml
index 98623f19a0a..68d580b283f 100644
--- a/share/spack/gitlab/cloud_pipelines/stacks/aws-pcluster-x86_64_v4/packages.yaml
+++ b/share/spack/gitlab/cloud_pipelines/stacks/aws-pcluster-x86_64_v4/packages.yaml
@@ -9,8 +9,8 @@ packages:
   gettext:
     require:
       - one_of:
-          - '%intel cflags="-std=c18"'
-          - '%gcc'
+          - "%intel cflags=-std=c18"
+          - "%gcc"
         message: "gettext uses single valued `static_assert` which is only available in `icc` as part of later C standard."
   gromacs:
     require: