diff --git a/static/js/yaris.js b/static/js/yaris.js
index 6b41df2..5c19a71 100644
--- a/static/js/yaris.js
+++ b/static/js/yaris.js
@@ -215,8 +215,8 @@ socket.on('gps_location', function(data) {
     LocationX.innerHTML = data[0];
     LocationY.innerHTML = data[1];
 
-    const lat = data[0];
-    const lon = data[1];
+    const lat = parseFloat(data[0]);
+    const lon = parseFloat(data[1]);
     if (lat != null && lon != null) {
         if (!map.hasLayer(mapTiles)) {
             mapTiles.addTo(map);