diff --git a/libraries/AP_InertialNav/AP_InertialNav_NavEKF.cpp b/libraries/AP_InertialNav/AP_InertialNav_NavEKF.cpp
index bffde6246f..d793cf95cb 100644
--- a/libraries/AP_InertialNav/AP_InertialNav_NavEKF.cpp
+++ b/libraries/AP_InertialNav/AP_InertialNav_NavEKF.cpp
@@ -3,8 +3,6 @@
 #include <AP_HAL.h>
 #include "AP_InertialNav.h"
 
-extern const AP_HAL::HAL& hal;
-
 #if AP_AHRS_NAVEKF_AVAILABLE
 
 /*
diff --git a/libraries/AP_InertialNav/AP_InertialNav_NavEKF.h b/libraries/AP_InertialNav/AP_InertialNav_NavEKF.h
index 710634162a..04dd0705dc 100644
--- a/libraries/AP_InertialNav/AP_InertialNav_NavEKF.h
+++ b/libraries/AP_InertialNav/AP_InertialNav_NavEKF.h
@@ -15,7 +15,8 @@ class AP_InertialNav_NavEKF : public AP_InertialNav
 public:
     // Constructor
     AP_InertialNav_NavEKF(AP_AHRS &ahrs, AP_Baro &baro, GPS_Glitch& gps_glitch ) :
-        AP_InertialNav(ahrs, baro, gps_glitch)
+        AP_InertialNav(ahrs, baro, gps_glitch),
+        _haveabspos(false)
         {
         }