diff --git a/gitlab.rb.tmpl b/gitlab.rb.tmpl
index 3581d33..cf19a8e 100644
--- a/gitlab.rb.tmpl
+++ b/gitlab.rb.tmpl
@@ -678,7 +678,7 @@ gitlab_rails['omniauth_providers'] = [
 # high_availability['mountpoint'] = ["/var/opt/gitlab/git-data", "/var/opt/gitlab/gitlab-rails/shared"]
 
 ### GitLab Shell settings for GitLab
-gitlab_rails['gitlab_shell_ssh_port'] = {{ env GITLAB_SSH_PORT }}
+gitlab_rails['gitlab_shell_ssh_port'] = {{ env "GITLAB_SSH_PORT" }}
 # gitlab_rails['gitlab_shell_git_timeout'] = 800
 
 ### Enable gitlab-sshd on a different port than OpenSSH