diff --git a/gateways.json b/gateways.json
index 65af18c..dc091c1 100644
--- a/gateways.json
+++ b/gateways.json
@@ -8,7 +8,7 @@
     },
     {
       "name": "CORE4",
-      "mac": "16:8F:8C:38:74:8B",
+      "mac": "16:8f:8c:38:74:8b",
       "domain": "TDF",
       "adresses": ["5.9.220.113"]
     },