diff --git a/test/fiber/test_address_resolve.rb b/test/fiber/test_address_resolve.rb
index 457221b9b1..12223bcc06 100644
--- a/test/fiber/test_address_resolve.rb
+++ b/test/fiber/test_address_resolve.rb
@@ -269,7 +269,7 @@ class TestAddressResolve < Test::Unit::TestCase
       Fiber.set_scheduler scheduler
 
       Fiber.schedule do
-        result = Socket.getnameinfo(["AF_INET", 80, "example.com"], Socket::NI_NUMERICSERV)
+        result = Socket.getnameinfo(["AF_INET", 80, "example.com"], Socket::NI_NUMERICSERV | Socket::NI_NUMERICHOST)
 
         assert_equal(["1.2.3.4", "80"], result)
       end