diff --git a/Tools/VARTest/VARTest.pde b/Tools/VARTest/VARTest.pde
index 8ddecdc4e7..e342d81771 100644
--- a/Tools/VARTest/VARTest.pde
+++ b/Tools/VARTest/VARTest.pde
@@ -35,6 +35,7 @@
 #include <AP_Mission.h>
 #include <AP_Rally.h>
 #include <AP_Terrain.h>
+#include <AP_BattMonitor.h>
 #include <AP_SpdHgtControl.h>
 #include <memcheck.h>
 #include <AP_RCMapper.h>