diff --git a/doc/install/installation.md b/doc/install/installation.md
index 3ac813aa914a5ccacafc334b71e2b57d497c4047..cb4c1f4a09165b510c4387eae4e3ca2df680618f 100644
--- a/doc/install/installation.md
+++ b/doc/install/installation.md
@@ -381,7 +381,7 @@ sudo usermod -aG redis git
 GitLab Shell is an SSH access and repository management software developed specially for GitLab.
 
     # Run the installation task for gitlab-shell (replace `REDIS_URL` if needed):
-    sudo -u git -H bundle exec rake gitlab:shell:install REDIS_URL=unix:/var/run/redis/redis.sock RAILS_ENV=production
+    sudo -u git -H bundle exec rake gitlab:shell:install REDIS_URL=unix:/var/run/redis/redis.sock RAILS_ENV=production SKIP_STORAGE_VALIDATION=true
 
     # By default, the gitlab-shell config is generated from your main GitLab config.
     # You can review (and modify) the gitlab-shell config as follows: