diff --git a/libraries/AP_Compass/AP_Compass.h b/libraries/AP_Compass/AP_Compass.h
index 0acfc7e9e3..d2040c1434 100644
--- a/libraries/AP_Compass/AP_Compass.h
+++ b/libraries/AP_Compass/AP_Compass.h
@@ -71,7 +71,7 @@
 #define MAX_CONNECTED_MAGS (COMPASS_MAX_UNREG_DEV+COMPASS_MAX_INSTANCES)
 
 #ifndef AP_SIM_COMPASS_ENABLED
-#define AP_SIM_COMPASS_ENABLED (CONFIG_HAL_BOARD == HAL_BOARD_SITL)
+#define AP_SIM_COMPASS_ENABLED AP_SIM_ENABLED
 #endif
 
 #include "CompassCalibrator.h"