diff --git a/public/index.html b/public/index.html
index 39421f7..c530150 100644
--- a/public/index.html
+++ b/public/index.html
@@ -56,7 +56,7 @@
     </div>
    <div id="btn_controls" class="pull-right" style="margin-top: 3px">
     <div id="nav_start" class="btn-group" style="display:none">
-     <button type="button" class="btn btn-default" onclick="runTaskSimulation();">Simulate</button>
+     <button type="button" class="btn btn-default" style="visibility: hidden;"  onclick="runTaskSimulation();">Simulate</button>
      <button type="button" class="btn btn-success" data-toggle="modal" data-target="#jobSummaryModal"><span class="glyphicon glyphicon-play"></span> Start</button>
     </div>
     <button id="nav_stop" type="button" class="btn btn-danger" onclick="abortTask()" style="display:none" ><span class="glyphicon glyphicon-stop"></span> Stop</button>