diff --git a/src/lib/drivers/magnetometer/PX4Magnetometer.cpp b/src/lib/drivers/magnetometer/PX4Magnetometer.cpp
index 40907d870d6d..d13133ef14f8 100644
--- a/src/lib/drivers/magnetometer/PX4Magnetometer.cpp
+++ b/src/lib/drivers/magnetometer/PX4Magnetometer.cpp
@@ -40,6 +40,7 @@ PX4Magnetometer::PX4Magnetometer(uint32_t device_id, enum Rotation rotation) :
 	_device_id{device_id},
 	_rotation{rotation}
 {
+	_sensor_pub.advertise();
 }
 
 PX4Magnetometer::~PX4Magnetometer()