diff --git a/app/src/split/central.c b/app/src/split/central.c
index b36c3d8d3..e53e7125a 100644
--- a/app/src/split/central.c
+++ b/app/src/split/central.c
@@ -58,6 +58,7 @@ int zmk_split_transport_central_peripheral_event_handler(
 #if IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_CENTRAL_BATTERY_LEVEL_FETCHING)
     case ZMK_SPLIT_TRANSPORT_PERIPHERAL_EVENT_TYPE_BATTERY_EVENT: {
         struct zmk_peripheral_battery_state_changed battery_ev = {
+            .source = source,
             .state_of_charge = ev.data.battery_event.level,
         };
         peripheral_battery_levels[source] = ev.data.battery_event.level;