diff --git a/src/openvpn/dco_linux.h b/src/openvpn/dco_linux.h
index 273a6ada..4e441ec7 100644
--- a/src/openvpn/dco_linux.h
+++ b/src/openvpn/dco_linux.h
@@ -40,6 +40,8 @@ typedef enum ovpn_cipher_alg dco_cipher_t;
 
 /* OVPN section */
 
+#ifndef IFLA_OVPN_MAX
+
 enum ovpn_mode {
     OVPN_MODE_P2P,
     OVPN_MODE_MP,
@@ -49,10 +51,13 @@ enum ovpn_ifla_attrs {
     IFLA_OVPN_UNSPEC = 0,
     IFLA_OVPN_MODE,
 
-    __IFLA_OVPN_AFTER_LAST,
-    IFLA_OVPN_MAX = __IFLA_OVPN_AFTER_LAST - 1,
+    __IFLA_OVPN_MAX,
 };
 
+#define IFLA_OVPN_MAX (__IFLA_OVPN_MAX - 1)
+
+#endif /* ifndef IFLA_OVPN_MAX */
+
 typedef struct
 {
     struct nl_sock *nl_sock;