diff --git a/src/nm-ip4-config.c b/src/nm-ip4-config.c
index e27c0436ff..3956132bfe 100644
--- a/src/nm-ip4-config.c
+++ b/src/nm-ip4-config.c
@@ -198,7 +198,7 @@ nm_ip4_config_capture (int ifindex, gboolean capture_resolv_conf)
 	for (i = 0; i < priv->routes->len; i++) {
 		const NMPlatformIP4Route *route = &g_array_index (priv->routes, NMPlatformIP4Route, i);
 
-		if (route->network == 0) {
+		if (NM_PLATFORM_IP_ROUTE_IS_DEFAULT (route)) {
 			if (route->metric < lowest_metric) {
 				priv->gateway = route->gateway;
 				lowest_metric = route->metric;
@@ -276,7 +276,8 @@ nm_ip4_config_commit (const NMIP4Config *config, int ifindex)
 			/* Don't add the default route if the connection
 			 * is never supposed to be the default connection.
 			 */
-			if (nm_ip4_config_get_never_default (config) && route.network == 0)
+			if (   nm_ip4_config_get_never_default (config)
+			    && NM_PLATFORM_IP_ROUTE_IS_DEFAULT (&route))
 				continue;
 
 			g_array_append_val (routes, route);
diff --git a/src/nm-ip6-config.c b/src/nm-ip6-config.c
index 7a1f74af70..55c6b20050 100644
--- a/src/nm-ip6-config.c
+++ b/src/nm-ip6-config.c
@@ -308,7 +308,7 @@ nm_ip6_config_capture (int ifindex, gboolean capture_resolv_conf, NMSettingIP6Co
 	for (i = 0; i < priv->routes->len; i++) {
 		const NMPlatformIP6Route *route = &g_array_index (priv->routes, NMPlatformIP6Route, i);
 
-		if (IN6_IS_ADDR_UNSPECIFIED (&route->network)) {
+		if (NM_PLATFORM_IP_ROUTE_IS_DEFAULT (route)) {
 			if (route->metric < lowest_metric) {
 				priv->gateway = route->gateway;
 				lowest_metric = route->metric;
@@ -387,7 +387,8 @@ nm_ip6_config_commit (const NMIP6Config *config, int ifindex)
 			/* Don't add the default route if the connection
 			 * is never supposed to be the default connection.
 			 */
-			if (nm_ip6_config_get_never_default (config) && IN6_IS_ADDR_UNSPECIFIED (&route.network))
+			if (   nm_ip6_config_get_never_default (config)
+			    && NM_PLATFORM_IP_ROUTE_IS_DEFAULT (&route))
 				continue;
 
 			g_array_append_val (routes, route);
diff --git a/src/platform/nm-linux-platform.c b/src/platform/nm-linux-platform.c
index 7b11a6b5b9..c18132760c 100644
--- a/src/platform/nm-linux-platform.c
+++ b/src/platform/nm-linux-platform.c
@@ -3523,7 +3523,7 @@ ip4_route_get_all (NMPlatform *platform, int ifindex, gboolean include_default)
 	for (object = nl_cache_get_first (priv->route_cache); object; object = nl_cache_get_next (object)) {
 		if (_route_match ((struct rtnl_route *) object, AF_INET, ifindex)) {
 			if (init_ip4_route (&route, (struct rtnl_route *) object)) {
-				if (route.plen != 0 || include_default)
+				if (!NM_PLATFORM_IP_ROUTE_IS_DEFAULT (&route) || include_default)
 					g_array_append_val (routes, route);
 			}
 		}
@@ -3545,7 +3545,7 @@ ip6_route_get_all (NMPlatform *platform, int ifindex, gboolean include_default)
 	for (object = nl_cache_get_first (priv->route_cache); object; object = nl_cache_get_next (object)) {
 		if (_route_match ((struct rtnl_route *) object, AF_INET6, ifindex)) {
 			if (init_ip6_route (&route, (struct rtnl_route *) object)) {
-				if (route.plen != 0 || include_default)
+				if (!NM_PLATFORM_IP_ROUTE_IS_DEFAULT (&route) || include_default)
 					g_array_append_val (routes, route);
 			}
 		}
diff --git a/src/platform/nm-platform.h b/src/platform/nm-platform.h
index 96b6cfabbd..348d1fa546 100644
--- a/src/platform/nm-platform.h
+++ b/src/platform/nm-platform.h
@@ -248,6 +248,9 @@ typedef struct {
 	};
 } NMPlatformIPRoute;
 
+#define NM_PLATFORM_IP_ROUTE_IS_DEFAULT(route) \
+	( ((const NMPlatformIPRoute *) (route))->plen <= 0 )
+
 typedef struct {
 	__NMPlatformIPRoute_COMMON;
 	in_addr_t network;