diff --git a/winsup/doc/ChangeLog b/winsup/doc/ChangeLog
index b220d5bca..304e3ec01 100644
--- a/winsup/doc/ChangeLog
+++ b/winsup/doc/ChangeLog
@@ -1,3 +1,7 @@
+2015-01-20  Corinna Vinschen  <corinna@vinschen.de>
+
+	* posix.xml (std-susv4): Move sockatmark here from std-notimpl.
+
 2015-01-14  Corinna Vinschen  <corinna@vinschen.de>
 
 	* ntsec.xml (ntsec-mapping-nsswitch-passwd): Document /path %H wildcard.
diff --git a/winsup/doc/posix.xml b/winsup/doc/posix.xml
index 4b0e2fda1..0a9eaaa33 100644
--- a/winsup/doc/posix.xml
+++ b/winsup/doc/posix.xml
@@ -786,6 +786,7 @@ also IEEE Std 1003.1-2008 (POSIX.1-2008).</para>
     sinhf
     sleep
     snprintf
+    sockatmark
     socket
     socketpair
     sprintf
@@ -1486,7 +1487,6 @@ also IEEE Std 1003.1-2008 (POSIX.1-2008).</para>
     sigtimedwait
     sinhl
     sinl
-    sockatmark
     sqrtl
     strcasecmp_l
     strcoll_l