diff --git a/libraries/AP_HAL/AP_HAL_Boards.h b/libraries/AP_HAL/AP_HAL_Boards.h
index a6ef45740f..4831aeaf91 100644
--- a/libraries/AP_HAL/AP_HAL_Boards.h
+++ b/libraries/AP_HAL/AP_HAL_Boards.h
@@ -170,8 +170,12 @@
 #define HAL_WITH_IO_MCU 0
 #endif
 
+#ifndef HAL_WITH_IO_MCU_BIDIR_DSHOT
+#define HAL_WITH_IO_MCU_BIDIR_DSHOT 0
+#endif
+
 #ifndef HAL_WITH_IO_MCU_DSHOT
-#define HAL_WITH_IO_MCU_DSHOT 0
+#define HAL_WITH_IO_MCU_DSHOT HAL_WITH_IO_MCU_BIDIR_DSHOT
 #endif
 
 // this is used as a general mechanism to make a 'small' build by