diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c2a39fcd4371a0d3aaf7d1837a05b02a66ee4e1c..bb3e6f96a7e1132101195e022936a9f250736cba 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -83,7 +83,7 @@ package-debian-job:
   script:
     # HINT: current working dir == '/builds/digital-preservation/${CI_PROJECT_NAME}' as root
     # bundle project into jar
-    - ROSETTASDK=${ROSETTASDK} make -e
+    - make -e
     # retrieve version infos
     - REVISION="1"
     - BRANCH="$(([ -z "${CI_COMMIT_BRANCH}" ] && echo ${CI_COMMIT_TAG} || echo ${CI_COMMIT_BRANCH}) | sed "s#[^A-Za-z0-9\.~+-]##g")" # use tag name in tag pipelines, filter characters based on https://www.debian.org/doc/debian-policy/ch-controlfields.html#s-f-version