diff --git a/libraries/AP_OpticalFlow/examples/AP_OpticalFlow_test/AP_OpticalFlow_test.cpp b/libraries/AP_OpticalFlow/examples/AP_OpticalFlow_test/AP_OpticalFlow_test.cpp
index 67319fd223..106174e4ef 100644
--- a/libraries/AP_OpticalFlow/examples/AP_OpticalFlow_test/AP_OpticalFlow_test.cpp
+++ b/libraries/AP_OpticalFlow/examples/AP_OpticalFlow_test/AP_OpticalFlow_test.cpp
@@ -27,9 +27,9 @@ public:
     AP_InertialSensor ins;
     AP_SerialManager serial_manager;
     RangeFinder sonar{serial_manager, ROTATION_PITCH_270};
-    AP_AHRS_NavEKF ahrs{ins, barometer, EKF2, EKF3, AP_AHRS_NavEKF::FLAG_ALWAYS_USE_EKF};
-    NavEKF2 EKF2{&ahrs, barometer, sonar};
-    NavEKF3 EKF3{&ahrs, barometer, sonar};
+    AP_AHRS_NavEKF ahrs{ins, EKF2, EKF3, AP_AHRS_NavEKF::FLAG_ALWAYS_USE_EKF};
+    NavEKF2 EKF2{&ahrs, sonar};
+    NavEKF3 EKF3{&ahrs, sonar};
 };
 
 static DummyVehicle vehicle;