diff --git a/manifest.json b/manifest.json
index 1496caf..c2cbbbb 100644
--- a/manifest.json
+++ b/manifest.json
@@ -31,7 +31,7 @@
                 "type": "domain"
             },
             {
-                "name": "username",
+                "name": "admin",
                 "type": "user"
             },
             {
diff --git a/scripts/install b/scripts/install
index d7a1351..92dffbd 100644
--- a/scripts/install
+++ b/scripts/install
@@ -28,7 +28,7 @@ ynh_abort_if_errors
 domain=$YNH_APP_ARG_DOMAIN
 path_url="/"
 is_public=$YNH_APP_ARG_IS_PUBLIC
-username=$YNH_APP_ARG_USERNAME
+admin=$YNH_APP_ARG_ADMIN
 email=$YNH_APP_ARG_EMAIL
 password=$YNH_APP_ARG_PASSWORD
 
@@ -256,7 +256,7 @@ pushd "$final_path"
 	rake_exec="sudo -u $app $ynh_ruby_load_path RAILS_ENV=production bin/rake"
 	ynh_exec_warn_less $rake_exec db:migrate
 	ynh_exec_warn_less $rake_exec assets:precompile
-	ynh_exec_warn_less $rake_exec "admin:create[$username, $email, $password]"
+	ynh_exec_warn_less $rake_exec "admin:create[$admin, $email, $password]"
 popd
 
 #=================================================