diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 9add28d52e1ea69dfb98faf170793ad61565a3a0..6c9f5319b780b6c95dfa14c64aeb1c97b5f47117 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,6 +1,5 @@
 variables:
   DOCKER_TLS_CERTDIR: ""
-  DB_HOST: $DB_HOST
 docker-build-master:
   # Official docker image.
   image: docker:latest