diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index c979d76ca..7353c14a2 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,7 @@
+2011-11-08  Corinna Vinschen  <corinna@vinschen.de>
+
+	* posix.sgml (std-gnu): Add ptsname_r.
+
 2011-11-08  Christopher Faylor  <me.cygwin2011@cgf.cx>
 
 	* fhandler.h (__ptsname): New macro.
diff --git a/winsup/cygwin/posix.sgml b/winsup/cygwin/posix.sgml
index ef27fde32..5c510ed34 100644
--- a/winsup/cygwin/posix.sgml
+++ b/winsup/cygwin/posix.sgml
@@ -1131,6 +1131,7 @@ also IEEE Std 1003.1-2008 (POSIX.1-2008).</para>
     pow10f
     ppoll
     pthread_getattr_np
+    ptsname_r
     removexattr
     setxattr
     strchrnul