diff --git a/src/etc/inc/plugins.inc.d/webgui.inc b/src/etc/inc/plugins.inc.d/webgui.inc
index 2d5dc260f..61e909688 100644
--- a/src/etc/inc/plugins.inc.d/webgui.inc
+++ b/src/etc/inc/plugins.inc.d/webgui.inc
@@ -100,7 +100,7 @@ function webgui_configure_do($verbose = false, $interface = '')
                 /* XXX ought to be replaced by PHP calls */
                 '/usr/local/bin/openssl req -new -extensions server_cert ' .
                 '-config /usr/local/etc/ssl/opnsense.cnf ' .
-                '-newkey rsa:4096 -sha256 -nodes -x509 ' .
+                '-newkey rsa:4096 -sha256 -days 825 -nodes -x509 ' .
                 '-subj "/C=NL/ST=Zuid-Holland/L=Middelharnis/O=OPNsense" ' .
                 '-keyout /tmp/ssl.key -out /tmp/ssl.crt'
             );