diff --git a/app/src/main/java/de/apps4ics/mountainnavigation/LocationService.java b/app/src/main/java/de/apps4ics/mountainnavigation/LocationService.java
index 5b0c846..6a733e9 100644
--- a/app/src/main/java/de/apps4ics/mountainnavigation/LocationService.java
+++ b/app/src/main/java/de/apps4ics/mountainnavigation/LocationService.java
@@ -111,7 +111,7 @@
     @Override
     public void onLocationChanged(Location location) {
         Log.d(MainActivity.TAG, "LOCATION found: " + location.toString());
-        locationCallback.onLocationUpdate(location);
+        if(locationCallback != null) locationCallback.onLocationUpdate(location);
     }
 
     @Override