diff --git a/dashboard/public/views/app.html b/dashboard/public/views/app.html
index e8de96d7d..da1e61a80 100644
--- a/dashboard/public/views/app.html
+++ b/dashboard/public/views/app.html
@@ -1176,7 +1176,7 @@
                 <div class="form-group">
                   <label class="control-label" for="devicesInput">Devices <sup><a ng-href="https://docs.cloudron.io/apps/#devices" class="help" target="_blank"><i class="fa fa-question-circle"></i></a></sup></label>
                   <p>Comma serparated list of devices mounted into the app</p>
-                  <input type="text" class="form-control" ng-class="{ 'has-error': resources.error.devices }" id="devicesInput" ng-model="resources.devices" placeholder="/dev/ttyUSB, /dev/hidraw0, ..." ng-disabled="resources.busy"/>
+                  <input type="text" class="form-control" ng-class="{ 'has-error': resources.error.devices }" id="devicesInput" ng-model="resources.devices" placeholder="/dev/ttyUSB0, /dev/hidraw0, ..." ng-disabled="resources.busy"/>
                   <span class="text-danger" ng-show="resources.error.devices">{{ resources.error.devices }}</span>
                 </div>
               </fieldset>