diff --git a/src/test/test-nss-hosts.c b/src/test/test-nss-hosts.c
index 7758f0adc9..72a9c6454c 100644
--- a/src/test/test-nss-hosts.c
+++ b/src/test/test-nss-hosts.c
@@ -451,7 +451,11 @@ static int parse_argv(int argc, char **argv,
         } else {
                 _cleanup_free_ char *hostname = NULL;
                 assert_se(hostname = gethostname_malloc());
-                assert_se(names = strv_new("localhost", "_gateway", "_outbound", "foo_no_such_host", hostname));
+                assert_se(names = strv_new("localhost",
+                                           "_gateway",
+                                           "_outbound",
+                                           hostname,
+                                           slow_tests_enabled() ? "foo_no_such_host" : NULL));
 
                 n = make_addresses(&addrs);
                 assert_se(n >= 0);