diff --git a/EKF/ekf.cpp b/EKF/ekf.cpp
index 64d2354649..6d760a9bcf 100644
--- a/EKF/ekf.cpp
+++ b/EKF/ekf.cpp
@@ -335,7 +335,7 @@ bool Ekf::initialiseFilter()
 		}
 
 	} else if (_primary_hgt_source == VDIST_SENSOR_EV) {
-		// do nothing becasue vision data is checked elsewhere
+		_hgt_counter = _ev_counter;
 	} else {
 		return false;
 	}