diff --git a/web/gui/src/main/webapp/app/view/topo/topoForce.js b/web/gui/src/main/webapp/app/view/topo/topoForce.js
index 3097343..b365db8 100644
--- a/web/gui/src/main/webapp/app/view/topo/topoForce.js
+++ b/web/gui/src/main/webapp/app/view/topo/topoForce.js
@@ -413,7 +413,7 @@
     }
 
     function cycleDeviceLabels() {
-        td3.incDevLabIndex();
+        flash.flash(td3.incDevLabIndex());
         tms.findDevices().forEach(function (d) {
             td3.updateDeviceLabel(d);
         });