diff --git a/ChangeLog b/ChangeLog
index 96aafaeda0..4c9c827252 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2014-11-21  Ma Shimiao <mashimiao.fnst@cn.fujitsu.com>
+
+	* manual/sysinfo.texi (addmntent): It is actually MT-Safe,
+	because the potential race is on the user-supplied stream.
+
 2014-11-21  Alexandre Oliva <aoliva@redhat.com>
 
 	* sysdeps/posix/ctermid.c (ctermid): Return a pointer to a
diff --git a/manual/sysinfo.texi b/manual/sysinfo.texi
index 1c9f51b1b5..e6c44d6366 100644
--- a/manual/sysinfo.texi
+++ b/manual/sysinfo.texi
@@ -790,7 +790,7 @@ end of file reached,
 @comment mntent.h
 @comment BSD
 @deftypefun int addmntent (FILE *@var{stream}, const struct mntent *@var{mnt})
-@safety{@prelim{}@mtunsafe{@mtasurace{:stream} @mtslocale{}}@asunsafe{@asucorrupt{}}@acunsafe{@acucorrupt{}}}
+@safety{@prelim{}@mtsafe{@mtsrace{:stream} @mtslocale{}}@asunsafe{@asucorrupt{}}@acunsafe{@acucorrupt{}}}
 @c addmntent @mtasurace:stream @mtslocale @asucorrupt @acucorrupt
 @c  fseek dup @asucorrupt @acucorrupt [no @aculock]
 @c  encode_name ok