diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 267cbcd56cd3101a2c71fbfe70efaa828e9d532d..3f95fe03caeae5477d08b3ddc6b6f0ac1b4a0e58 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -113,8 +113,8 @@ version:
       if [ "x${CI_PIPELINE_SOURCE}" = "xmerge_request_event" ]; then
         INTERNAL_TAG="unstable-mr-${CI_MERGE_REQUEST_ID}"
         NIGHTLY_TAG="${INTERNAL_TAG}-nightly"
-        EXPORT_TAG=${VERSION_SHORT}-unstable
-        EXPORT_TAG2=
+        EXPORT_TAG="${VERSION_SHORT}-unstable"
+        EXPORT_TAG2="unstable-mr-${CI_MERGE_REQUEST_PROJECT_ID}-${CI_MERGE_REQUEST_IID}"
       elif [[ "$CI_COMMIT_TAG" =~ ^v${VERSION} ]]; then
         VERSION_FULL="${CI_COMMIT_TAG:1}"
         INTERNAL_TAG="stable-tag-${VERSION_FULL}"