diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index dab09c9ab05dc8debdb3bbf270a64a389170bded..b5412cb0cefc64f4f1868805a8c055e2cdbdb0c2 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -71,7 +71,7 @@ transfer_image:
   image: docker:19.03.12
   services:
     - docker:19.03.12-dind
-    - alias: docker
+      alias: docker
   variables:
     IMAGE_TAG: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
   script: