diff --git a/libraries/AP_HAL_ChibiOS/hwdef/scripts/defaults_periph.h b/libraries/AP_HAL_ChibiOS/hwdef/scripts/defaults_periph.h
index c42596b792..af253acccf 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/scripts/defaults_periph.h
+++ b/libraries/AP_HAL_ChibiOS/hwdef/scripts/defaults_periph.h
@@ -247,6 +247,11 @@
 #define AP_BATT_MONITOR_MAX_INSTANCES 1
 #endif
 
+// Capacity tracking off
+#ifndef AP_BATT_MONITOR_BATTERY_CAPACITY
+#define AP_BATT_MONITOR_BATTERY_CAPACITY 0
+#endif
+
 #ifndef RANGEFINDER_MAX_INSTANCES
 #define RANGEFINDER_MAX_INSTANCES 1
 #endif