diff --git a/ChangeLog b/ChangeLog
index cac990e4df..830a3d79f8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Oct 20 16:19:51 2016  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
+
+	* lib/open-uri.rb: Improved documentation grammar for
+	  open-uri#open option. [Misc #11329][ruby-core:69868][ci skip]
+
 Wed Oct 19 21:48:40 2016  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
 
 	* NEWS: mention refinements with Kernel#send and
diff --git a/lib/open-uri.rb b/lib/open-uri.rb
index 2414f5101c..b09c18efd9 100644
--- a/lib/open-uri.rb
+++ b/lib/open-uri.rb
@@ -638,8 +638,8 @@ module OpenURI
     #  is called before actual transfer is started.
     #  It takes one argument, which is expected content length in bytes.
     #
-    #  If two or more transfer is done by HTTP redirection, the procedure
-    #  is called only one for a last transfer.
+    #  If two or more transfers are performed by HTTP redirection, the
+    #  procedure is called only once for the last transfer.
     #
     #  When expected content length is unknown, the procedure is called with
     #  nil.  This happens when the HTTP response has no Content-Length header.