diff --git a/test/webrick/test_httpserver.rb b/test/webrick/test_httpserver.rb
index bbfef53611..ffebf7e843 100644
--- a/test/webrick/test_httpserver.rb
+++ b/test/webrick/test_httpserver.rb
@@ -115,10 +115,10 @@ class TestWEBrickHTTPServer < Test::Unit::TestCase
       host3  = httpd(addr1, port1, name2, alias1),
       host4  = httpd(addr1, port2, name1, nil),
       host5  = httpd(addr1, port2, name2, alias1),
-      host6  = httpd(addr1, port2, name3, alias2),
+               httpd(addr1, port2, name3, alias2),
       host7  = httpd(addr2, nil,   name1, nil),
       host8  = httpd(addr2, nil,   name2, alias1),
-      host9  = httpd(addr2, nil,   name3, alias2),
+               httpd(addr2, nil,   name3, alias2),
       host10 = httpd(local, nil,   nil,   nil),
       host11 = httpd(nil,   port3, nil,   nil),
     ].sort_by{ rand }
@@ -235,7 +235,7 @@ class TestWEBrickHTTPServer < Test::Unit::TestCase
       }
       server.virtual_host(WEBrick::HTTPServer.new(vhost_config))
 
-      true while server.status != :Running
+      Thread.pass while server.status != :Running
       assert_equal(started, 1, log.call)
       assert_equal(stopped, 0, log.call)
       assert_equal(accepted, 0, log.call)
@@ -356,7 +356,7 @@ class TestWEBrickHTTPServer < Test::Unit::TestCase
       :RequestHandler => Proc.new{|req, res| requested += 1 },
     }
     TestWEBrick.start_httpserver(config){|server, addr, port, log|
-      true while server.status != :Running
+      Thread.pass while server.status != :Running
 
       http = Net::HTTP.new(addr, port)
       req = Net::HTTP::Get.new("/")