diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 9265228fc78988f725997a2599e80837ebe6b12f..bf5e6fa193d4df6336eee83fc8a1def861ae5c46 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -10,7 +10,7 @@ build-user-manual:
   stage: "Documentation"
   needs: []
   script:
-    - nox --session user-manual
+    - nox --session user_manual
   artifacts:
     paths:
       - user_manual/_sphinx_build/html