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 429fe8d93d..6f6f3ab895 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
@@ -11,6 +11,7 @@
 #include <AP_HAL.h>
 #include <AP_HAL_AVR.h>
 #include <AP_HAL_AVR_SITL.h>
+#include <AP_HAL_PX4.h>
 #include <AP_HAL_Empty.h>
 #include <AP_GPS.h>
 #include <AP_Math.h>
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 92e13389d3..48892c771d 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
@@ -12,6 +12,8 @@
 #include <AP_Param.h>
 #include <AP_HAL.h>
 #include <AP_HAL_AVR.h>
+#include <AP_HAL_PX4.h>
+#include <AP_HAL_Empty.h>
 #include <AP_GPS.h>
 #include <AP_Math.h>