diff --git a/man3/wctrans.3 b/man3/wctrans.3
index 4cc354d96..4d0a5c2d4 100644
--- a/man3/wctrans.3
+++ b/man3/wctrans.3
@@ -13,7 +13,7 @@
 .\"   OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
 .\"   ISO/IEC 9899:1999
 .\"
-.TH WCTRANS 3  1999-07-25 "GNU" "Linux Programmer's Manual"
+.TH WCTRANS 3  2013-11-04 "GNU" "Linux Programmer's Manual"
 .SH NAME
 wctrans \- wide-character translation mapping
 .SH SYNOPSIS
@@ -59,6 +59,14 @@ function returns a mapping descriptor if the
 is valid.
 Otherwise it returns
 .IR "(wctrans_t)\ 0" .
+.SH ATTRIBUTES
+.SS Multithreading (see pthreads(7))
+The
+.BR wctrans ()
+function is thread-safe with exceptions.
+It can be safely used in multithreaded applications, as long as
+.BR setlocale (3)
+is not called to change the locale.
 .SH CONFORMING TO
 C99.
 .SH NOTES