diff --git a/src/dns/nm-dns-systemd-resolved.c b/src/dns/nm-dns-systemd-resolved.c
index 10d46b5b04..876d32266b 100644
--- a/src/dns/nm-dns-systemd-resolved.c
+++ b/src/dns/nm-dns-systemd-resolved.c
@@ -427,6 +427,7 @@ update (NMDnsPlugin *plugin,
 	gs_free gpointer *interfaces_keys = NULL;
 	guint interfaces_len;
 	int ifindex;
+	gpointer pointer;
 	NMDnsIPConfigData *ip_data;
 	GHashTableIter     iter;
 	guint i;
@@ -471,7 +472,8 @@ update (NMDnsPlugin *plugin,
 	 * resolved, and the current update doesn't contain that interface,
 	 * reset the resolved configuration for that ifindex. */
 	g_hash_table_iter_init (&iter, priv->dirty_interfaces);
-	while (g_hash_table_iter_next (&iter, (gpointer *) &ifindex, NULL)) {
+	while (g_hash_table_iter_next (&iter, (gpointer *) &pointer, NULL)) {
+		ifindex = GPOINTER_TO_INT (pointer);
 		if (!g_hash_table_contains (interfaces, GINT_TO_POINTER (ifindex))) {
 			InterfaceConfig ic;