--- usr/www/all/internet/dsl_spectrum.lua
+++ usr/www/all/internet/dsl_spectrum.lua
@@ -214,7 +214,7 @@
 <script type="text/javascript" src="/js/chartistplugins.js"></script>
 <script type="text/javascript">
 var g_spectrum = <?lua box.out(js.table(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;
@@ -594,7 +594,7 @@
 <!-- Legende xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx-->
 <div class="formular">
 <div class="formular">
-<a href="javascript:OnMinMax()" class="textlink nocancel" id="uiToggleMinMax">{?7888:534?}</a>
+<a href="javascript:OnMinMax()" class="textlink nocancel" id="uiToggleMinMax">{?7888:518?}</a>  <!-- from function OnMinMax() -->
 </div>
 </div>
 </div>