diff --git a/src/modules/ekf2/EKF/aid_sources/range_finder/sensor_range_finder.hpp b/src/modules/ekf2/EKF/aid_sources/range_finder/sensor_range_finder.hpp
index f57510029d..194ca1a027 100644
--- a/src/modules/ekf2/EKF/aid_sources/range_finder/sensor_range_finder.hpp
+++ b/src/modules/ekf2/EKF/aid_sources/range_finder/sensor_range_finder.hpp
@@ -66,7 +66,7 @@ public:
 	SensorRangeFinder() = default;
 	~SensorRangeFinder() override = default;
 
-	void runChecks(uint64_t current_time_us, const matrix::Dcmf &R_to_earth, bool in_air);
+	void runChecks(uint64_t current_time_us, const matrix::Dcmf &R_to_earth, bool in_air = true);
 	bool isHealthy() const override { return _is_sample_valid; }
 	bool isDataHealthy() const override { return _is_sample_ready && _is_sample_valid; }
 	bool isDataReady() const { return _is_sample_ready; }