diff --git a/src/lib/FlightTasks/tasks/AutoLineSmoothVel/FlightTaskAutoLineSmoothVel.hpp b/src/lib/FlightTasks/tasks/AutoLineSmoothVel/FlightTaskAutoLineSmoothVel.hpp
index 144ab41e107cc99ba4aafff72b9815a59825aa1f..6d89937b5f0d977f3df95cffc54f57097013abc1 100644
--- a/src/lib/FlightTasks/tasks/AutoLineSmoothVel/FlightTaskAutoLineSmoothVel.hpp
+++ b/src/lib/FlightTasks/tasks/AutoLineSmoothVel/FlightTaskAutoLineSmoothVel.hpp
@@ -75,6 +75,6 @@ protected:
 	void _prepareSetpoints(); /**< Generate velocity target points for the trajectory generator. */
 	void _generateTrajectory();
 	VelocitySmoothing _trajectory[3]; ///< Trajectories in x, y and z directions
-	float _yaw_sp_prev;
+	float _yaw_sp_prev{NAN};
 	uint8_t _reset_counter{0}; /**< counter for estimator resets in xy-direction */
 };