diff --git a/clusters/naics.json b/clusters/naics.json
index 9c61cea..de46b5b 100644
--- a/clusters/naics.json
+++ b/clusters/naics.json
@@ -1,4 +1,5 @@
 {
+  "category": "sector",
   "description": "The North American Industry Classification System or NAICS is a classification of business establishments by type of economic activity (the process of production).",
   "name": "NAICS",
   "source": "North American Industry Classification System - NAICS",