diff --git a/gcn/circulars.schema.json b/gcn/circulars.schema.json
index 681dd8c0..9ddc12b9 100644
--- a/gcn/circulars.schema.json
+++ b/gcn/circulars.schema.json
@@ -32,7 +32,7 @@
     "body": { "type": "string", "description": "Body text" },
     "createdOn": {
       "type": "number",
-      "description": "Date and time the Circular is accepted and published onto the GCN Circular archive, formatted as a UNIX timestamp (milliseconds since the UNIX epoch)"
+      "description": "Date and time the Circular is accepted and published onto the GCN Circulars archive, formatted as a UNIX timestamp (milliseconds since the UNIX epoch)"
     }
   }
 }