diff --git a/lib/main_screen.dart b/lib/main_screen.dart
index c014752..7564b4d 100644
--- a/lib/main_screen.dart
+++ b/lib/main_screen.dart
@@ -59,7 +59,7 @@ class _MainScreenState extends State<MainScreen> with TickerProviderStateMixin {
           _lastLon = lon.toStringAsFixed(5);
         }
         final speed = status?['lastSpeed'];
-        if (speed != null) {
+        if (speed != null && speed > 0) {
           _lastSpeed = (speed * 3.6).toStringAsFixed(1);
         }
         final timestamp = status?['lastTimestamp'];
@@ -76,7 +76,7 @@ class _MainScreenState extends State<MainScreen> with TickerProviderStateMixin {
         setState(() {
           _lastLat = location['latitude']?.toStringAsFixed(5) ?? '--';
           _lastLon = location['longitude']?.toStringAsFixed(5) ?? '--';
-          _lastSpeed = location['speed'] != null
+          _lastSpeed = location['speed'] != null && location['speed'] > 0
               ? (location['speed'] * 3.6).toStringAsFixed(1)
               : '--';
           _lastTime = location['timestamp'] != null && location['timestamp'] > 0