diff --git a/libraries/AP_BattMonitor/AP_BattMonitor_MPPT_PacketDigital.h b/libraries/AP_BattMonitor/AP_BattMonitor_MPPT_PacketDigital.h
index f8e6090078..85fb1b4ed5 100644
--- a/libraries/AP_BattMonitor/AP_BattMonitor_MPPT_PacketDigital.h
+++ b/libraries/AP_BattMonitor/AP_BattMonitor_MPPT_PacketDigital.h
@@ -5,7 +5,7 @@
 #include <AP_CANManager/AP_CANSensor.h>
 
 #ifndef HAL_MPPT_PACKETDIGITAL_CAN_ENABLE
-    #define HAL_MPPT_PACKETDIGITAL_CAN_ENABLE HAL_MAX_CAN_PROTOCOL_DRIVERS && BOARD_FLASH_SIZE > 1024
+    #define HAL_MPPT_PACKETDIGITAL_CAN_ENABLE (!defined(HAL_BUILD_AP_PERIPH) && HAL_MAX_CAN_PROTOCOL_DRIVERS && BOARD_FLASH_SIZE > 1024) || (defined(HAL_BUILD_AP_PERIPH) && defined(HAL_PERIPH_ENABLE_BATTERY_MPPT_PACKETDIGITAL))
 #endif
 
 #if HAL_MPPT_PACKETDIGITAL_CAN_ENABLE