diff --git a/libraries/AP_Module/examples/ModuleTest/ModuleTest.cpp b/libraries/AP_Module/examples/ModuleTest/ModuleTest.cpp
index 2fb6b3f5472..5d6a695b285 100644
--- a/libraries/AP_Module/examples/ModuleTest/ModuleTest.cpp
+++ b/libraries/AP_Module/examples/ModuleTest/ModuleTest.cpp
@@ -19,9 +19,9 @@ const AP_HAL::HAL& hal = AP_HAL::get_HAL();
 
 // sensor declaration
 static AP_InertialSensor ins;
-#if HAL_EXTERNAL_AHRS_ENABLED
+#if AP_EXTERNAL_AHRS_ENABLED
  static AP_ExternalAHRS eAHRS;
-#endif // HAL_EXTERNAL_AHRS_ENABLED
+#endif // AP_EXTERNAL_AHRS_ENABLED
 static AP_GPS gps;
 static AP_Baro baro;
 static AP_SerialManager serial_manager;