diff --git a/plugins/dynamix/Eth0.page b/plugins/dynamix/Eth0.page
index 8ce2a4753..1492870e6 100644
--- a/plugins/dynamix/Eth0.page
+++ b/plugins/dynamix/Eth0.page
@@ -195,7 +195,7 @@ function selectProtocol(form,port,index) {
       var i = $(this).attr('name').split(':')[1];
       var net4 = $('.'+port+'-ipv4-'+i);
       var net6 = $('.'+port+'-ipv6-'+i);
-      var dhcp = $('select[name="USE_DHCP:'+i+'"]').val();
+      var dhcp = $(form).find('select[name="USE_DHCP:'+i+'"]').val();
       if (dhcp) switch (protocol) {
         case 'ipv4': net4.show(); net6.hide(); break;
         case 'ipv6': net4.hide(); net6.show(); break;