diff --git a/hw/xwin/ChangeLog b/hw/xwin/ChangeLog
index ca6c6f17b..2b78d8605 100644
--- a/hw/xwin/ChangeLog
+++ b/hw/xwin/ChangeLog
@@ -1,3 +1,8 @@
+2005-01-11  Alexander Gottwald  <ago at freedesktop dot org>
+
+	* XWin.man:
+	Document the -silent-dup-error switch
+
 2005-01-11  Alexander Gottwald  <ago at freedesktop dot org>
 
 	* winkeyhook.c:
diff --git a/hw/xwin/XWin.man b/hw/xwin/XWin.man
index e758c98cb..4e70c19f5 100644
--- a/hw/xwin/XWin.man
+++ b/hw/xwin/XWin.man
@@ -229,6 +229,9 @@ The \fIAlt-F4\fP key combination is enabled by default.
 .TP 8
 .B \-swcursor
 Disable the usage of the windows cursor and use the X11 software cursor instead.
+.B \-silent-dup-error
+If another instance of XWin is found running, exit silently and don't display 
+the error messge.
 .TP 8
 .B "\-xkblayout \fIlayout\fP"
 .TP 8