diff --git a/cli/mmcli-modem.c b/cli/mmcli-modem.c
index 346f6a30..9d3d900a 100644
--- a/cli/mmcli-modem.c
+++ b/cli/mmcli-modem.c
@@ -346,7 +346,8 @@ print_modem_info (void)
     g_free (bands);
     mm_modem_get_ports (ctx->modem, &ports, &n_ports);
     ports_string = mm_common_build_ports_string (ports, n_ports);
-    mm_modem_port_info_array_free (ports, n_ports);
+    if (ports)
+        mm_modem_port_info_array_free (ports, n_ports);
     mm_modem_get_ignored_ports (ctx->modem, &ignored_ports, &n_ignored_ports);
     ignored_ports_string = mm_common_build_ports_string (ignored_ports, n_ignored_ports);
     if (ignored_ports)