diff --git a/src/modules/simulation/sensor_gps_sim/SensorGpsSim.cpp b/src/modules/simulation/sensor_gps_sim/SensorGpsSim.cpp
index 283f71d684..5641706345 100644
--- a/src/modules/simulation/sensor_gps_sim/SensorGpsSim.cpp
+++ b/src/modules/simulation/sensor_gps_sim/SensorGpsSim.cpp
@@ -132,7 +132,7 @@ void SensorGpsSim::Run()
 		if (_sim_gps_used.get() >= 4) {
 			// fix
 			sensor_gps.fix_type = 3; // 3D fix
-			sensor_gps.s_variance_m_s = 0.5f;
+			sensor_gps.s_variance_m_s = 0.4f;
 			sensor_gps.c_variance_rad = 0.1f;
 			sensor_gps.eph = 0.9f;
 			sensor_gps.epv = 1.78f;