diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5ab510c9d7b4408494754c7112c3fe57a18f0dcf..b2159796e394a6cfa1ef1b90b876d449834a3018 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -192,20 +192,20 @@ version:
 dind-build:
   extends: .dind
   variables:
-  - EXPORT_TAG:
+    EXPORT_TAG:
 
 dind-publish:
   image: ${CI_REGISTRY}/${CI_PROJECT_PATH}/dind:${INTERNAL_TAG}
   extends: .dind
   variables:
-  - EXPORT_TAG: ${EXPORT_TAG}
+    EXPORT_TAG: ${EXPORT_TAG}
 
 dind-default:
   image: ${CI_REGISTRY}/${CI_PROJECT_PATH}/dind:${INTERNAL_TAG}
   extends: .dind
   when: manual
   variables:
-  - EXPORT_TAG: master
+    EXPORT_TAG: master
 
 base:
   parallel: