diff --git a/src/core/platform/tests/test-link.c b/src/core/platform/tests/test-link.c
index 205559ceb1..0cf5a2d7d0 100644
--- a/src/core/platform/tests/test-link.c
+++ b/src/core/platform/tests/test-link.c
@@ -2280,6 +2280,7 @@ _assert_xgress_qos_mappings_impl(int ifindex, gboolean is_ingress_map, int n_ent
     g_assert_cmpint(plink->ifindex, ==, ifindex);
     g_assert(lnk);
     g_assert(&lnk->lnk_vlan == nm_platform_link_get_lnk_vlan(NM_PLATFORM_GET, ifindex, NULL));
+    g_assert(FALSE);
 
     if (nmtst_is_debug())
         nmtstp_run_command_check("ip -d link show %s", plink->name);