diff --git a/net/netlink/netlink.h b/net/netlink/netlink.h
index 9932a9635f..cdfd7287d8 100644
--- a/net/netlink/netlink.h
+++ b/net/netlink/netlink.h
@@ -562,7 +562,7 @@ void netlink_neigh_notify(FAR const void *neigh, int type, int domain);
  *
  ****************************************************************************/
 
-#if defined(CONFIG_NETLINK_DISABLE_NEWPREFIX) || !defined(CONFIG_NET_IPV6)
+#if defined(CONFIG_NETLINK_DISABLE_NEWPREFIX) || !defined(CONFIG_NET_IPv6)
 #  define netlink_ipv6_prefix_notify(dev, type, pinfo)
 #else
 void netlink_ipv6_prefix_notify(FAR struct net_driver_s *dev, int type,
diff --git a/net/netlink/netlink_route.c b/net/netlink/netlink_route.c
index b4fecc769d..7d35e9f543 100644
--- a/net/netlink/netlink_route.c
+++ b/net/netlink/netlink_route.c
@@ -1276,7 +1276,7 @@ static int netlink_get_addr(NETLINK_HANDLE handle,
 }
 #endif
 
-#if !defined(CONFIG_NETLINK_DISABLE_NEWADDR) && defined(CONFIG_NET_IPV6)
+#if !defined(CONFIG_NETLINK_DISABLE_NEWADDR) && defined(CONFIG_NET_IPv6)
 static FAR struct netlink_response_s *
 netlink_fill_ipv6prefix(FAR struct net_driver_s *dev, int type,
                         FAR const struct icmpv6_prefixinfo_s *pinfo)
@@ -1669,7 +1669,7 @@ void netlink_neigh_notify(FAR const void *neigh, int type, int domain)
  *
  ****************************************************************************/
 
-#if !defined(CONFIG_NETLINK_DISABLE_NEWADDR) && defined(CONFIG_NET_IPV6)
+#if !defined(CONFIG_NETLINK_DISABLE_NEWADDR) && defined(CONFIG_NET_IPv6)
 void netlink_ipv6_prefix_notify(FAR struct net_driver_s *dev, int type,
                                 FAR const struct icmpv6_prefixinfo_s *pinfo)
 {