diff --git a/hamm.json b/hamm.json
index 69ed412..aa30b80 100644
--- a/hamm.json
+++ b/hamm.json
@@ -20,13 +20,6 @@
     ],
     "lastchange": "2019-10-20T11:59:00.000Z"
   },
-  "nodeMaps": [
-    {
-      "url": "https://karte.freifunk-muensterland.de/map_Hamm/",
-      "interval": "1x pro Minute",
-      "technicalType": "ffmap"
-    }
-  ],
   "techDetails": {
     "firmware": {
       "name": "gluon",