diff --git a/libraries/AP_GPS/examples/GPS_AUTO_test/GPS_AUTO_test.pde b/libraries/AP_GPS/examples/GPS_AUTO_test/GPS_AUTO_test.pde
index 9b2395da38..e9447d6709 100644
--- a/libraries/AP_GPS/examples/GPS_AUTO_test/GPS_AUTO_test.pde
+++ b/libraries/AP_GPS/examples/GPS_AUTO_test/GPS_AUTO_test.pde
@@ -28,6 +28,7 @@
 #include <AP_Vehicle.h>
 #include <AP_ADC_AnalogSource.h>
 #include <AP_Mission.h>
+#include <AP_Terrain.h>
 #include <AP_Math.h>
 #include <AP_Notify.h>
 #include <AP_BoardLED.h>
diff --git a/libraries/AP_GPS/examples/GPS_UBLOX_passthrough/GPS_UBLOX_passthrough.pde b/libraries/AP_GPS/examples/GPS_UBLOX_passthrough/GPS_UBLOX_passthrough.pde
index 6c9ab52004..d7620b82c8 100644
--- a/libraries/AP_GPS/examples/GPS_UBLOX_passthrough/GPS_UBLOX_passthrough.pde
+++ b/libraries/AP_GPS/examples/GPS_UBLOX_passthrough/GPS_UBLOX_passthrough.pde
@@ -29,6 +29,7 @@
 #include <AP_Vehicle.h>
 #include <AP_ADC_AnalogSource.h>
 #include <AP_Mission.h>
+#include <AP_Terrain.h>
 #include <AP_Math.h>
 #include <AP_Notify.h>
 #include <AP_NavEKF.h>