diff --git a/libraries/AP_HAL/examples/Printf/Printf.pde b/libraries/AP_HAL/examples/Printf/Printf.pde
index be5e6c1f975..8874cad8bdd 100644
--- a/libraries/AP_HAL/examples/Printf/Printf.pde
+++ b/libraries/AP_HAL/examples/Printf/Printf.pde
@@ -6,6 +6,10 @@
 #include <AP_Common.h>
 #include <AP_Baro.h>
 #include <AP_ADC.h>
+#include <AP_GPS.h>
+#include <AP_InertialSensor.h>
+#include <AP_Notify.h>
+#include <DataFlash.h>
 #include <GCS_MAVLink.h>
 #include <AP_Compass.h>
 #include <AP_Declination.h>
diff --git a/libraries/AP_HAL_FLYMAPLE/examples/AP_Baro_BMP085_test/AP_Baro_BMP085_test.pde b/libraries/AP_HAL_FLYMAPLE/examples/AP_Baro_BMP085_test/AP_Baro_BMP085_test.pde
index 4b317651f9b..99954a16b62 100644
--- a/libraries/AP_HAL_FLYMAPLE/examples/AP_Baro_BMP085_test/AP_Baro_BMP085_test.pde
+++ b/libraries/AP_HAL_FLYMAPLE/examples/AP_Baro_BMP085_test/AP_Baro_BMP085_test.pde
@@ -16,6 +16,7 @@
 #include <AP_Notify.h>
 #include <Filter.h>
 #include <AP_Baro.h>
+#include <DataFlash.h>
 #include <GCS_MAVLink.h>
 
 #include <AP_HAL_FLYMAPLE.h>
diff --git a/libraries/AP_HAL_PX4/examples/simple/simple.pde b/libraries/AP_HAL_PX4/examples/simple/simple.pde
index 6b812258f83..44f69e0fc2b 100644
--- a/libraries/AP_HAL_PX4/examples/simple/simple.pde
+++ b/libraries/AP_HAL_PX4/examples/simple/simple.pde
@@ -16,6 +16,9 @@
 #include <Filter.h>
 #include <AP_InertialSensor.h>
 #include <AP_ADC.h>
+#include <AP_InertialSensor.h>
+#include <AP_GPS.h>
+#include <DataFlash.h>
 #include <GCS_MAVLink.h>
 #include <AP_Param.h>
 #include <AP_Baro.h>