diff --git a/content/red.nl.md b/content/red.nl.md
index 8b9bf82..cb15afe 100644
--- a/content/red.nl.md
+++ b/content/red.nl.md
@@ -1,6 +1,6 @@
 Title: Rotterdams Electronica Depot
 Date: 2017-04-09
-Category: work groups
+Category: work group
 Slug: red-nl
 lang: nl
 tags: electronica