diff --git a/src/modules/ekf2/EKF/common.h b/src/modules/ekf2/EKF/common.h
index c5fb499b69..cf822e5fa6 100644
--- a/src/modules/ekf2/EKF/common.h
+++ b/src/modules/ekf2/EKF/common.h
@@ -70,7 +70,8 @@ static constexpr uint64_t BARO_MAX_INTERVAL     = 200e3;  ///< Maximum allowable
 static constexpr uint64_t EV_MAX_INTERVAL       = 200e3;  ///< Maximum allowable time interval between external vision system measurements (uSec)
 static constexpr uint64_t GNSS_MAX_INTERVAL     = 500e3;  ///< Maximum allowable time interval between GNSS measurements (uSec)
 static constexpr uint64_t GNSS_YAW_MAX_INTERVAL = 1500e3; ///< Maximum allowable time interval between GNSS yaw measurements (uSec)
-static constexpr uint64_t RNG_MAX_INTERVAL      = 200e3;  ///< Maximum allowable time interval between range finder  measurements (uSec)
+static constexpr uint64_t RNG_MAX_INTERVAL      = 200e3;  ///< Maximum allowable time interval between range finder measurements (uSec)
+static constexpr uint64_t MAG_MAX_INTERVAL      = 500e3;  ///< Maximum allowable time interval between magnetic field measurements (uSec)
 
 // bad accelerometer detection and mitigation
 static constexpr uint64_t BADACC_PROBATION = 10e6; ///< Period of time that accel data declared bad must continuously pass checks to be declared good again (uSec)
diff --git a/src/modules/ekf2/EKF/mag_control.cpp b/src/modules/ekf2/EKF/mag_control.cpp
index 8f1cb33035..f77847a329 100644
--- a/src/modules/ekf2/EKF/mag_control.cpp
+++ b/src/modules/ekf2/EKF/mag_control.cpp
@@ -107,6 +107,10 @@ void Ekf::controlMagFusion()
 			_aid_src_mag.timestamp_sample = mag_sample.time_us;
 			mag_observation.copyTo(_aid_src_mag.observation);
 			mag_innov.copyTo(_aid_src_mag.innovation);
+
+		} else if (!isNewestSampleRecent(_time_last_mag_buffer_push, 2 * MAG_MAX_INTERVAL)) {
+			// No data anymore. Stop until it comes back.
+			stopMagFusion();
 		}
 	}