diff --git a/libraries/AP_Module/examples/ModuleTest/ModuleTest.cpp b/libraries/AP_Module/examples/ModuleTest/ModuleTest.cpp
index bb0121abf8..797ce50325 100644
--- a/libraries/AP_Module/examples/ModuleTest/ModuleTest.cpp
+++ b/libraries/AP_Module/examples/ModuleTest/ModuleTest.cpp
@@ -5,6 +5,7 @@
 #include <AP_AHRS/AP_AHRS.h>
 #include <AP_HAL/AP_HAL.h>
 #include <AP_Module/AP_Module.h>
+#include <AP_GPS/AP_GPS.h>
 
 void setup();
 void loop();