diff --git a/ChangeLog b/ChangeLog
index 6912d1c498..74461993cd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Mon Nov 16 12:11:11 2015  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
+
+	* lib/webrick/httpauth/basicauth.rb: fix a typo.
+	  [ci skip][fix GH-1099] Patch by @jwworth
+	* lib/webrick/httpauth/digestauth.rb: ditto.
+
 Sun Nov 15 18:28:43 2015  Kenichi Kamiya  <kachick1@gmail.com>
 
 	* vm_method.c (set_method_visibility): should fail if the receiver
diff --git a/lib/webrick/httpauth/basicauth.rb b/lib/webrick/httpauth/basicauth.rb
index 3ff20b56d2..ed5dcd1fcd 100644
--- a/lib/webrick/httpauth/basicauth.rb
+++ b/lib/webrick/httpauth/basicauth.rb
@@ -89,8 +89,7 @@ module WEBrick
       end
 
       ##
-      # Returns a challenge response which asks for for authentication
-      # information
+      # Returns a challenge response which asks for authentication information
 
       def challenge(req, res)
         res[@response_field] = "#{@auth_scheme} realm=\"#{@realm}\""
diff --git a/lib/webrick/httpauth/digestauth.rb b/lib/webrick/httpauth/digestauth.rb
index 0eea94774f..d94bd890eb 100644
--- a/lib/webrick/httpauth/digestauth.rb
+++ b/lib/webrick/httpauth/digestauth.rb
@@ -128,8 +128,7 @@ module WEBrick
       end
 
       ##
-      # Returns a challenge response which asks for for authentication
-      # information
+      # Returns a challenge response which asks for authentication information
 
       def challenge(req, res, stale=false)
         nonce = generate_next_nonce(req)