diff --git a/test/webrick/test_httprequest.rb b/test/webrick/test_httprequest.rb
index fa18177..c2ff599 100644
--- a/test/webrick/test_httprequest.rb
+++ b/test/webrick/test_httprequest.rb
@@ -19,12 +19,12 @@ def test_simple_request
   end
 
   def test_parse_09
-    msg = <<-_end_of_message_
+    msg = <<~HTTP.gsub("\n", "\r\n")
       GET /
       foobar    # HTTP/0.9 request don't have header nor entity body.
-    _end_of_message_
+    HTTP
     req = WEBrick::HTTPRequest.new(WEBrick::Config::HTTP)
-    req.parse(StringIO.new(msg.gsub(/^ {6}/, "").gsub("\n", "\r\n")))
+    req.parse(StringIO.new(msg))
     assert_equal("GET", req.request_method)
     assert_equal("/", req.unparsed_uri)
     assert_equal(WEBrick::HTTPVersion.new("0.9"), req.http_version)