diff --git a/ChangeLog b/ChangeLog
index 6d1a23e929..b92fa9730b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Wed Jul  4 23:36:27 2007  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
+
+	* lib/webrick/httpauth/authenticator.rb
+	  (WEBrick::HTTPAuth::Authenticator#check_scheme): auth-scheme must be
+	  treated as a case-insensitive token according to RFC 2617 section 1.2.
+
 Wed Jul  4 18:30:04 2007  Tanaka Akira  <akr@fsij.org>
 
 	* parse.y (mlhs_inner): new rule.  [ruby-dev:31132]
diff --git a/lib/webrick/httpauth/authenticator.rb b/lib/webrick/httpauth/authenticator.rb
index fe2dbf4e0c..f90d1bf75b 100644
--- a/lib/webrick/httpauth/authenticator.rb
+++ b/lib/webrick/httpauth/authenticator.rb
@@ -42,7 +42,7 @@ module WEBrick
           error("no credentials in the request.")
           return nil 
         end  
-        unless match = /^#{@auth_scheme}\s+/.match(credentials)
+        unless match = /^#{@auth_scheme}\s+/i.match(credentials)
           error("invalid scheme in %s.", credentials)
           info("%s: %s", @request_field, credentials) if $DEBUG
           return nil