diff --git a/ArduSub/Parameters.cpp b/ArduSub/Parameters.cpp
index 51e9d7d3ae8..61553ad4f9a 100644
--- a/ArduSub/Parameters.cpp
+++ b/ArduSub/Parameters.cpp
@@ -656,7 +656,7 @@ const AP_Param::Info Sub::var_info[] = {
 #if HAL_NAVEKF3_AVAILABLE
     // @Group: EK3_
     // @Path: ../libraries/AP_NavEKF3/AP_NavEKF3.cpp
-    GOBJECTN(ahrs.EKF3, NavEKF3, "EK3_", NavEKF3),
+    GOBJECTN(ahrs.ekf3.EKF3, NavEKF3, "EK3_", NavEKF3),
 #endif
 
     // @Group: MIS_