diff --git a/apps/bookstack/config.json b/apps/bookstack/config.json
index 490eede8..16e42811 100644
--- a/apps/bookstack/config.json
+++ b/apps/bookstack/config.json
@@ -9,7 +9,7 @@
   "description": "BookStack is a simple, self-hosted, easy-to-use platform for organising and storing information. Default login: admin@admin.com password: password",
   "short_desc": "BookStack is a self-hosted platform for organising and storing information.",
   "author": "Dan Brown",
-  "categories": ["Data"],
+  "categories": ["data"],
   "website": "https://www.bookstackapp.com/",
   "source": "https://github.com/BookStackApp/BookStack",
   "form_fields": [