diff --git a/files/kea/kea-dhcp4.conf b/files/kea/kea-dhcp4.conf
index c046a5e..dd31e90 100644
--- a/files/kea/kea-dhcp4.conf
+++ b/files/kea/kea-dhcp4.conf
@@ -108,7 +108,7 @@
                         "hostname": "s2.net.tjas"
                     },
                     {
-                        "hw-address": "90:1b:0e:5b:18:fa",
+                        "hw-address": "90:1b:0e:5b:18:fb",
                         "ip-address": "192.168.2.10",
                         "hostname": "olympus.juva.tjas"
                     }
@@ -205,7 +205,7 @@
                         "hostname": "s3.net.tjas"
                     },
                     {
-                        "hw-address": "90:1b:0e:5b:18:fa",
+                        "hw-address": "90:1b:0e:5b:18:fc",
                         "ip-address": "192.168.69.20",
                         "hostname": "olympus.juva.tjas"
                     }