diff --git a/hinterzimmer.json b/hinterzimmer.json
index 009b30a..39635e7 100644
--- a/hinterzimmer.json
+++ b/hinterzimmer.json
@@ -184,6 +184,12 @@
          "imagewidth":288,
          "margin":0,
          "name":"mapUtilities",
+         "properties":[
+                {
+                 "name":"tilesetCopyright",
+                 "type":"string",
+                 "value":"CC0 1.0 Universal"
+                }],
          "spacing":0,
          "tilecount":9,
          "tileheight":32,