diff --git a/html/cgi-bin/vpnmain.cgi b/html/cgi-bin/vpnmain.cgi
index 5e3015393..27729d3f5 100644
--- a/html/cgi-bin/vpnmain.cgi
+++ b/html/cgi-bin/vpnmain.cgi
@@ -2000,6 +2000,7 @@ VPNCONF_ERROR:
 	<input type='hidden' name='DPD_DELAY' value='$cgiparams{'DPD_DELAY'}' />
 	<input type='hidden' name='DPD_TIMEOUT' value='$cgiparams{'DPD_TIMEOUT'}' />
 	<input type='hidden' name='FORCE_MOBIKE' value='$cgiparams{'FORCE_MOBIKE'}' />
+	<input type='hidden' name='INACTIVITY_TIMEOUT' value='$cgiparams{'INACTIVITY_TIMEOUT'}' />
 	<input type='hidden' name='MODE' value='$cgiparams{'MODE'}' />
 END
 ;