diff --git a/DroneSimulator/Drone.cs b/DroneSimulator/Drone.cs
index 0c0ce82..4b53469 100644
--- a/DroneSimulator/Drone.cs
+++ b/DroneSimulator/Drone.cs
@@ -350,7 +350,11 @@ namespace DroneSimulator
       RealBar.Update(PosXYZ.Z, tick);
       RealPos.Update(PosXYZ, tick);
 
-      bool of = RealOF.Update(new Vector2(SpdXYZ.X / range - Gyr.Y, SpdXYZ.Y / range + Gyr.X), LaserRange, tick);
+      Vector2 of_xy;
+      if (range > 0.1) of_xy = new Vector2(SpdXYZ.X / range - Gyr.Y, SpdXYZ.Y / range + Gyr.X);
+      else of_xy = Vector2.Zero;
+
+      bool of = RealOF.Update(of_xy, LaserRange, tick);
 
       if(of) lock (this)
       {