diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fd87eef59ee2f176613b1436a11bd1d86219f223..33d6ff097cf05539b84b8997cac4c007f647db88 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -206,7 +206,7 @@ spack:mksquashfs:
     #- .spack_cache
   script:
     - source ci/stack_env.sh
-    - mksquashfs ${STACK_LOCATION} ${stack}-${environment}-${SQUASH_ID}.sqfs
+    - mksquashfs ${STACK_LOCATION} ${stack}-${environment}-${SQUASHFS_ID}.sqfs
 
   needs:
     - job: spack:install