diff --git a/apps/sensortools/lib.js b/apps/sensortools/lib.js
index f0155d289..5e1c199c2 100644
--- a/apps/sensortools/lib.js
+++ b/apps/sensortools/lib.js
@@ -275,7 +275,7 @@ exports.enable = () => {
         let currentAlt=500;
         let currentSats=5;
         
-        (() => {
+        modGps(() => {
           currentLat += 0.01;
           if (currentLat > 50) currentLat = 20;
           currentLon += 0.01;