diff --git a/uisp_router.json b/uisp_router.json
index c803579..9626420 100644
--- a/uisp_router.json
+++ b/uisp_router.json
@@ -36,7 +36,7 @@
       },
       {
         "name": "Aggertal-Hotel",
-        "mac": "D0:21:F9:BB:E7:52",
+        "mac": "d0:21:f9:bb:e7:52",
         "gateway_nexthop": "18e8292f7de6",
         "gateway": "a28cae6ff604",
         "domain": "VPN",