diff --git a/Kernel/API/POSIX/net/if_arp.h b/Kernel/API/POSIX/net/if_arp.h
index ff5d08af73..5ac1555b17 100644
--- a/Kernel/API/POSIX/net/if_arp.h
+++ b/Kernel/API/POSIX/net/if_arp.h
@@ -21,6 +21,14 @@ struct arpreq {
     char arp_dev[16];
 };
 
+#define ARPHRD_ETHER 1
+#define ARPHRD_IEEE802 6
+#define ARPHRD_SLIP 256
+#define ARPHRD_PPP 512
+#define ARPHRD_LOOPBACK 772
+#define ARPHRD_FDDI 774
+#define ARPHRD_IEEE802_TR 800
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Kernel/Net/IPv4Socket.cpp b/Kernel/Net/IPv4Socket.cpp
index b0b03dc037..d51f4d3258 100644
--- a/Kernel/Net/IPv4Socket.cpp
+++ b/Kernel/Net/IPv4Socket.cpp
@@ -712,7 +712,7 @@ ErrorOr<void> IPv4Socket::ioctl(OpenFileDescription&, unsigned request, Userspac
 
         case SIOCGIFHWADDR: {
             auto mac_address = adapter->mac_address();
-            ifr.ifr_hwaddr.sa_family = AF_INET;
+            ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER; // FIXME: Query the underlying network interface for it's type
             mac_address.copy_to(Bytes { ifr.ifr_hwaddr.sa_data, sizeof(ifr.ifr_hwaddr.sa_data) });
             return copy_to_user(user_ifr, &ifr);
         }