diff --git a/.vscode/launch.json b/.vscode/launch.json
index 4d181ce3a0b..d73a6daaeb6 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -16,7 +16,7 @@
                 "OCIS_LOG_PRETTY": "true",
                 "OCIS_LOG_COLOR": "true",
                 // user id of "admin", for user creation and admin role assignement
-                "OCIS_ADMIN_USER_ID": "admin-user-id",
+                "OCIS_ADMIN_USER_ID": "some-admin-user-id-0000-000000000000", // FIXME currently must have the length of a UUID, see reva/pkg/storage/utils/decomposedfs/spaces.go:228
                 // set insecure options because we don't have valid certificates in dev environments
                 "OCIS_INSECURE": "true",
                 // set some hardcoded secrets
@@ -40,8 +40,8 @@
                 "IDM_ADMIN_PASSWORD": "admin",
                 // demo users
                 "IDM_CREATE_DEMO_USERS": "true",
-                // metadata storage
-                "METADATA_USER_ID": "some-metadata-user-id"
+                // system user
+                "OCIS_SYSTEM_USER_ID": "some-system-user-id-000-000000000000", // FIXME currently must have the length of a UUID, see reva/pkg/storage/utils/decomposedfs/spaces.go:228
                 // OCIS_RUN_EXTENSIONS allows to start a subset of extensions even in the supervised mode
                 //"OCIS_RUN_EXTENSIONS": "settings,storage-system,glauth,graph,graph-explorer,idp,ocs,store,thumbnails,web,webdav,frontend,gateway,user,group,auth-basic,auth-bearer,storage-authmachine,storage-users,storage-shares,storage-publiclink,app-provider,sharing,accounts,proxy,ocdav",
             }