diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 05c97e22b..89f8c8661 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -85,7 +85,8 @@ jest:
 nginx-test:
   stage: test
   image: nginx:latest
-  before_script: cp installation/mastodon.conf /etc/nginx/conf.d/default.conf
+  before_script:
+    - cp installation/mastodon.conf /etc/nginx/conf.d/default.conf
   script: nginx -t
   only:
     changes: