diff --git a/src/openvpn/lladdr.c b/src/openvpn/lladdr.c
index 3ddbebb3..ee677187 100644
--- a/src/openvpn/lladdr.c
+++ b/src/openvpn/lladdr.c
@@ -13,6 +13,7 @@
 #include "misc.h"
 #include "run_command.h"
 #include "lladdr.h"
+#include "proto.h"
 
 int
 set_lladdr(openvpn_net_ctx_t *ctx, const char *ifname, const char *lladdr,
@@ -26,7 +27,7 @@ set_lladdr(openvpn_net_ctx_t *ctx, const char *ifname, const char *lladdr,
     }
 
 #if defined(TARGET_LINUX)
-    uint8_t addr[ETH_ALEN];
+    uint8_t addr[OPENVPN_ETH_ALEN];
 
     sscanf(lladdr, MAC_FMT, MAC_SCAN_ARG(addr));
     r = (net_addr_ll_set(ctx, ifname, addr) == 0);
diff --git a/src/openvpn/networking_sitnl.c b/src/openvpn/networking_sitnl.c
index 959c897f..515a30d6 100644
--- a/src/openvpn/networking_sitnl.c
+++ b/src/openvpn/networking_sitnl.c
@@ -32,6 +32,7 @@
 #include "buffer.h"
 #include "misc.h"
 #include "networking.h"
+#include "proto.h"
 
 #include <errno.h>
 #include <string.h>
@@ -748,7 +749,7 @@ net_addr_ll_set(openvpn_net_ctx_t *ctx, const openvpn_net_iface_t *iface,
     req.i.ifi_family = AF_PACKET;
     req.i.ifi_index = ifindex;
 
-    SITNL_ADDATTR(&req.n, sizeof(req), IFLA_ADDRESS, addr, ETH_ALEN);
+    SITNL_ADDATTR(&req.n, sizeof(req), IFLA_ADDRESS, addr, OPENVPN_ETH_ALEN);
 
     msg(M_INFO, "%s: lladdr " MAC_FMT " for %s", __func__, MAC_PRINT_ARG(addr),
         iface);