diff --git a/net/upnp/src/www/services_upnp.php b/net/upnp/src/www/services_upnp.php
index 3a73b5700..5ca0754f1 100644
--- a/net/upnp/src/www/services_upnp.php
+++ b/net/upnp/src/www/services_upnp.php
@@ -390,7 +390,7 @@ include("head.inc");
                         <input name="<?= html_safe($permuser) ?>" type="text" value="<?= $pconfig[$permuser] ?>" />
 <?php if ($i == 1): ?>
                         <div class="hidden" data-for="help_for_permuser">
-                          <?=gettext("Format: [allow or deny] [ext port or range] [int ipaddr or ipaddr/cdir] [int port or range]");?><br/>
+                          <?=gettext("Format: [allow or deny] [ext port or range] [int ipaddr or ipaddr/cidr] [int port or range]");?><br/>
                           <?=gettext("Example: allow 1024-65535 192.168.0.0/24 1024-65535");?>
                         </div>
 <?php endif ?>