diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a99689c..c3762ae 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -29,7 +29,7 @@ pages:
     # Now go build the site we actually want to deploy.
     - cd ..
     - mv simulated-butter-usb.html butter-usb.html # simulate the drive being inserted
-    - sed -i "s/base_url.*/base_url: 'butter-box-ui'" _config.yml
+    - sed -i 's/baseurl.*/baseurl: "butter-box-ui"/' _config.yml
     - bundle exec jekyll build -d public
   artifacts:
     paths: