diff --git a/libraries/AP_HAL/board/sitl.h b/libraries/AP_HAL/board/sitl.h
index 827ca24218..6a6ae8af7b 100644
--- a/libraries/AP_HAL/board/sitl.h
+++ b/libraries/AP_HAL/board/sitl.h
@@ -19,4 +19,4 @@
 #define HAL_GPIO_LED_OFF          1
 
 #define HAL_HAVE_BOARD_VOLTAGE 1
-#define HAL_HAVE_SAFETY_SWITCH 1
+#define HAL_HAVE_SAFETY_SWITCH 0