diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1a031041be913d0fc975045e4d8e8c3056495a08..466b408f90ff61257ff5c94d7f270933806ea569 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -14,7 +14,7 @@ docker_ci_image:
       alias: docker
   script:
     - echo -n "$CI_JOB_TOKEN" | docker login -u gitlab-ci-token --password-stdin registry.git.autistici.org
-    - cd ci && docker build -build-arg ci_token=$CI_JOB_TOKEN --pull -t $IMAGE_TAG .
+    - cd ci && docker build --build-arg ci_token=$CI_JOB_TOKEN --pull -t $IMAGE_TAG .
     - docker tag $IMAGE_TAG $CI_REGISTRY_IMAGE:runner
     - docker push $CI_REGISTRY_IMAGE:runner
   only: