diff --git a/EKF/ekf.cpp b/EKF/ekf.cpp
index 1464bafb70..0fe39caf3d 100644
--- a/EKF/ekf.cpp
+++ b/EKF/ekf.cpp
@@ -341,7 +341,6 @@ bool Ekf::initialiseFilter(void)
 		}
 
 	} else if (_primary_hgt_source == VDIST_SENSOR_EV) {
-		// vision data counters are sampled elsewhere
 		_hgt_counter = _ev_counter;
 	} else {
 		return false;