2 files changed, 3 insertions, 3 deletions
diff --git a/test/drb/test_drb.rb b/test/drb/test_drb.rb
index 47b2966ae2..6d7b10e347 100644
--- a/test/drb/test_drb.rb
+++ b/test/drb/test_drb.rb
@@ -323,7 +323,7 @@ class TestDRbAnyToS < Test::Unit::TestCase
   end
 
   def test_any_to_s
-    server = DRb::DRbServer.new('druby://:0')
+    server = DRb::DRbServer.new('druby://localhost:0')
     server.singleton_class.send(:public, :any_to_s)
     assert_equal("foo:String", server.any_to_s("foo"))
     assert_match(/\A#<DRbTests::TestDRbAnyToS::BO:0x[0-9a-f]+>\z/, server.any_to_s(BO.new))
@@ -335,7 +335,7 @@ end
 
 class TestDRbTCP < Test::Unit::TestCase
   def test_immediate_close
-    server = DRb::DRbServer.new('druby://:0')
+    server = DRb::DRbServer.new('druby://localhost:0')
     host, port, = DRb::DRbTCPSocket.send(:parse_uri, server.uri)
     socket = TCPSocket.open host, port
     socket.shutdown
diff --git a/test/drb/test_drbssl.rb b/test/drb/test_drbssl.rb
index 8ab010e1c4..58606119f3 100644
--- a/test/drb/test_drbssl.rb
+++ b/test/drb/test_drbssl.rb
@@ -34,7 +34,7 @@ class DRbSSLService < DRbService
         [ ["C","JP"], ["O","Foo.DRuby.Org"], ["CN", "Sample"] ]
     end
 
-    @server = DRb::DRbServer.new('drbssl://:0', manager, config)
+    @server = DRb::DRbServer.new('drbssl://localhost:0', manager, config)
   end
 end