diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b554f2b79b0fad188c368fc39fdf38603d3b6a62..e23895a10264535d38f581bcbc26ae0c17608ecc 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,7 +4,7 @@ stages:
   - build
 
 before_script:
-  - docker login registry.gitlab.inria.fr -u="$CI_REGISTRY_USER" -p="$CI_REGISTRY_PASSWORD"
+  - docker login registry.gitlab.inria.fr -u=$CI_REGISTRY_USER -p=$CI_REGISTRY_PASSWORD
 
 build_docker:
     stage: build