diff --git a/libraries/AP_GPS/examples/GPS_406_test/GPS_406_test.pde b/libraries/AP_GPS/examples/GPS_406_test/GPS_406_test.pde
index 3fc1e07e53..22b4510606 100644
--- a/libraries/AP_GPS/examples/GPS_406_test/GPS_406_test.pde
+++ b/libraries/AP_GPS/examples/GPS_406_test/GPS_406_test.pde
@@ -13,6 +13,7 @@
 #include <AP_HAL.h>
 #include <AP_HAL_AVR.h>
 #include <AP_GPS.h>
+#include <AP_Notify.h>
 
 const AP_HAL::HAL& hal = AP_HAL_BOARD_DRIVER;
 
diff --git a/libraries/AP_GPS/examples/GPS_MTK_test/GPS_MTK_test.pde b/libraries/AP_GPS/examples/GPS_MTK_test/GPS_MTK_test.pde
index bdeee0fe68..10ecf97ef5 100644
--- a/libraries/AP_GPS/examples/GPS_MTK_test/GPS_MTK_test.pde
+++ b/libraries/AP_GPS/examples/GPS_MTK_test/GPS_MTK_test.pde
@@ -16,6 +16,7 @@
 #include <AP_HAL_Empty.h>
 #include <AP_GPS.h>
 #include <AP_Math.h>
+#include <AP_Notify.h>
 
 const AP_HAL::HAL& hal = AP_HAL_BOARD_DRIVER;
 
diff --git a/libraries/AP_GPS/examples/GPS_NMEA_test/GPS_NMEA_test.pde b/libraries/AP_GPS/examples/GPS_NMEA_test/GPS_NMEA_test.pde
index 1bbe54cb56..d4cfe4157d 100644
--- a/libraries/AP_GPS/examples/GPS_NMEA_test/GPS_NMEA_test.pde
+++ b/libraries/AP_GPS/examples/GPS_NMEA_test/GPS_NMEA_test.pde
@@ -13,6 +13,7 @@
 #include <AP_HAL_AVR.h>
 #include <AP_HAL_AVR_SITL.h>
 #include <AP_HAL_Empty.h>
+#include <AP_Notify.h>
 
 const AP_HAL::HAL& hal = AP_HAL_BOARD_DRIVER;
 
diff --git a/libraries/AP_GPS/examples/GPS_UBLOX_test/GPS_UBLOX_test.pde b/libraries/AP_GPS/examples/GPS_UBLOX_test/GPS_UBLOX_test.pde
index b5622ec751..12bad7f9aa 100644
--- a/libraries/AP_GPS/examples/GPS_UBLOX_test/GPS_UBLOX_test.pde
+++ b/libraries/AP_GPS/examples/GPS_UBLOX_test/GPS_UBLOX_test.pde
@@ -16,6 +16,7 @@
 #include <AP_HAL_PX4.h>
 #include <AP_GPS.h>
 #include <AP_Math.h>
+#include <AP_Notify.h>
 
 const AP_HAL::HAL& hal = AP_HAL_BOARD_DRIVER;