diff --git a/src/trainprogram.cpp b/src/trainprogram.cpp
index ca91b306d9..5774f07776 100644
--- a/src/trainprogram.cpp
+++ b/src/trainprogram.cpp
@@ -866,6 +866,10 @@ void trainprogram::scheduler() {
         qDebug() << QStringLiteral("fixing jitter!") << seconds << ticks << currentTimerJitter;
     }
 
+    if (!bluetoothManager || !bluetoothManager->device()) {
+        return;
+    }
+
     double odometerFromTheDevice = bluetoothManager->device()->odometer();
 
     if(ticks < 0) {