diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7b5c16c..a4125ac 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -10,7 +10,7 @@ workflow:
 variables:
   DOCKERHUB_REGISTRY: index.docker.io
   DOCKERHUB_REPO: bw_backup
-  IMAGE_NAME_DOCKERHUB: $DOCKERHUB_REGISTRY/$DOCKERHUB_USER/$DOCKERHUB_REPO"
+  IMAGE_NAME_DOCKERHUB: $DOCKERHUB_REGISTRY/$DOCKERHUB_USER/$DOCKERHUB_REPO
   # see https://gitlab.com/gitlab-org/gitlab-runner/issues/4501
   DOCKER_DRIVER: overlay2
   DOCKER_TLS_CERTDIR: "/certs"