diff --git a/libraries/AP_NavEKF2/AP_NavEKF2.cpp b/libraries/AP_NavEKF2/AP_NavEKF2.cpp
index cb9f2cfc1f..1bfb2ea831 100644
--- a/libraries/AP_NavEKF2/AP_NavEKF2.cpp
+++ b/libraries/AP_NavEKF2/AP_NavEKF2.cpp
@@ -4,6 +4,7 @@
 #include <AP_Vehicle/AP_Vehicle.h>
 #include <GCS_MAVLink/GCS.h>
 #include <AP_Logger/AP_Logger.h>
+#include <AP_GPS/AP_GPS.h>
 #include <new>
 
 /*
diff --git a/libraries/AP_NavEKF2/AP_NavEKF2_Control.cpp b/libraries/AP_NavEKF2/AP_NavEKF2_Control.cpp
index 41e4a79382..9fbf46bc98 100644
--- a/libraries/AP_NavEKF2/AP_NavEKF2_Control.cpp
+++ b/libraries/AP_NavEKF2/AP_NavEKF2_Control.cpp
@@ -5,6 +5,7 @@
 #include <AP_AHRS/AP_AHRS.h>
 #include <AP_Vehicle/AP_Vehicle.h>
 #include <GCS_MAVLink/GCS.h>
+#include <AP_GPS/AP_GPS.h>
 
 #include <stdio.h>
 
diff --git a/libraries/AP_NavEKF2/AP_NavEKF2_Measurements.cpp b/libraries/AP_NavEKF2/AP_NavEKF2_Measurements.cpp
index f936cdcb0b..5ad90f683c 100644
--- a/libraries/AP_NavEKF2/AP_NavEKF2_Measurements.cpp
+++ b/libraries/AP_NavEKF2/AP_NavEKF2_Measurements.cpp
@@ -6,6 +6,7 @@
 #include <AP_Vehicle/AP_Vehicle.h>
 #include <GCS_MAVLink/GCS.h>
 #include <AP_RangeFinder/RangeFinder_Backend.h>
+#include <AP_GPS/AP_GPS.h>
 
 #include <stdio.h>
 
diff --git a/libraries/AP_NavEKF2/AP_NavEKF2_Outputs.cpp b/libraries/AP_NavEKF2/AP_NavEKF2_Outputs.cpp
index ed94474ae2..5f903d1b6c 100644
--- a/libraries/AP_NavEKF2/AP_NavEKF2_Outputs.cpp
+++ b/libraries/AP_NavEKF2/AP_NavEKF2_Outputs.cpp
@@ -4,6 +4,7 @@
 #include "AP_NavEKF2_core.h"
 #include <AP_AHRS/AP_AHRS.h>
 #include <AP_Vehicle/AP_Vehicle.h>
+#include <AP_GPS/AP_GPS.h>
 
 #include <stdio.h>
 
diff --git a/libraries/AP_NavEKF2/AP_NavEKF2_PosVelFusion.cpp b/libraries/AP_NavEKF2/AP_NavEKF2_PosVelFusion.cpp
index a313df9d90..e795960bdb 100644
--- a/libraries/AP_NavEKF2/AP_NavEKF2_PosVelFusion.cpp
+++ b/libraries/AP_NavEKF2/AP_NavEKF2_PosVelFusion.cpp
@@ -5,6 +5,7 @@
 #include <AP_AHRS/AP_AHRS.h>
 #include <AP_Vehicle/AP_Vehicle.h>
 #include <AP_RangeFinder/RangeFinder_Backend.h>
+#include <AP_GPS/AP_GPS.h>
 
 #include <stdio.h>
 
diff --git a/libraries/AP_NavEKF2/AP_NavEKF2_VehicleStatus.cpp b/libraries/AP_NavEKF2/AP_NavEKF2_VehicleStatus.cpp
index 8fb46a56fd..8fbad61a8f 100644
--- a/libraries/AP_NavEKF2/AP_NavEKF2_VehicleStatus.cpp
+++ b/libraries/AP_NavEKF2/AP_NavEKF2_VehicleStatus.cpp
@@ -5,6 +5,7 @@
 #include <AP_AHRS/AP_AHRS.h>
 #include <AP_Vehicle/AP_Vehicle.h>
 #include <GCS_MAVLink/GCS.h>
+#include <AP_GPS/AP_GPS.h>
 
 #include <stdio.h>
 
diff --git a/libraries/AP_NavEKF2/AP_NavEKF2_core.cpp b/libraries/AP_NavEKF2/AP_NavEKF2_core.cpp
index 4b790bb1ae..c6de0cd926 100644
--- a/libraries/AP_NavEKF2/AP_NavEKF2_core.cpp
+++ b/libraries/AP_NavEKF2/AP_NavEKF2_core.cpp
@@ -5,6 +5,7 @@
 #include <AP_AHRS/AP_AHRS.h>
 #include <AP_Vehicle/AP_Vehicle.h>
 #include <GCS_MAVLink/GCS.h>
+#include <AP_GPS/AP_GPS.h>
 
 #include <stdio.h>