diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0edab01..825ffc8 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -19,7 +19,7 @@
     - apk update
     - apk add --no-cache git
   script:
-    - CLEAN_TAG: "${CI_COMMIT_TAG:1}"
+    - CLEAN_TAG="${CI_COMMIT_TAG:1}"
     - docker build -f Dockerfile -t korap/kustvakt:$VID .
     - docker save korap/kustvakt:$VID | xz > kustvakt-$CLEAN_TAG.tar.xz
   artifacts: