diff --git a/tests/nginx-tests/tengine-tests/dynamic_resolve.t b/tests/nginx-tests/tengine-tests/dynamic_resolve.t
index 262b3000a1..ed3f6a64ac 100644
--- a/tests/nginx-tests/tengine-tests/dynamic_resolve.t
+++ b/tests/nginx-tests/tengine-tests/dynamic_resolve.t
@@ -258,7 +258,7 @@ sub dns_server_daemon {
         Verbose      => 0
     ) or die "couldn't create nameserver object\n";
 
-    $ns->main_loop;
+    $ns->start_server;
 }
 
 ###############################################################################
diff --git a/tests/nginx-tests/tengine-tests/vnswrr4dynamic_ups.t b/tests/nginx-tests/tengine-tests/vnswrr4dynamic_ups.t
index d0e17b1a06..c65fec4abd 100644
--- a/tests/nginx-tests/tengine-tests/vnswrr4dynamic_ups.t
+++ b/tests/nginx-tests/tengine-tests/vnswrr4dynamic_ups.t
@@ -255,7 +255,7 @@ sub dns_server_daemon {
         Verbose      => 0
     ) or die "couldn't create nameserver object\n";
 
-    $ns->main_loop;
+    $ns->start_server;
 }
 
 ###############################################################################