--- usr/www/all/internet/dsl_spectrum.lua
+++ usr/www/all/internet/dsl_spectrum.lua
@@ -257,7 +257,7 @@
 import Chartist from "/js/chartist.js";
 import { ajaxGet, stopXhr } from "/js/ajax.js";
 var g_spectrum = <?lua json.write(g_data) ?>;
-var g_show_MinMax=<?lua if box.get.min_max then box.out(" true ") else box.out(" false ") end ?>;
+var g_show_MinMax=<?lua if not box.get.min_max then box.out(" true ") else box.out(" false ") end ?>;
 function yAxisFormatterSnr(val, axis) {
 if (val % 10 == 0) {
 return val;
@@ -700,7 +700,7 @@
 </div>
 <!-- Legende xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx-->
 <div class="formular">
-<a class="textlink nocancel" id="uiToggleMinMax">{?7888:534?}</a><br>
+<a class="textlink nocancel" id="uiToggleMinMax">{?7888:534?}</a><br>  <!-- from function OnMinMax() -->
 <a class="hide" id="uiMinMaxReset">{?7888:4099?}</a>
 </div>
 </div>