diff --git a/EKF/estimator_interface.cpp b/EKF/estimator_interface.cpp
index 3e3e317f8e..6545edc45b 100644
--- a/EKF/estimator_interface.cpp
+++ b/EKF/estimator_interface.cpp
@@ -435,7 +435,7 @@ bool EstimatorInterface::initialise_interface(uint64_t timestamp)
 	_time_last_range = 0;
 	_time_last_airspeed = 0;
 	_time_last_optflow = 0;
-	memset(&_fault_status.flags, 0, sizeof(_fault_status.flags));
+	_fault_status.value = 0;
 	_time_last_ext_vision = 0;
 	return true;
 }