diff --git a/plugins/gatt-example.c b/plugins/gatt-example.c
index f86e76d..334f74a 100644
--- a/plugins/gatt-example.c
+++ b/plugins/gatt-example.c
@@ -81,7 +81,7 @@ static void register_battery_service(void)
 
 	/* Battery: battery state characteristic */
 	bt_uuid16_create(&uuid, GATT_CHARAC_UUID);
-	atval[0] = ATT_CHAR_PROPER_READ;
+	atval[0] = ATT_CHAR_PROPER_READ | ATT_CHAR_PROPER_NOTIFY;
 	att_put_u16(h + 1, &atval[1]);
 	att_put_u16(BATTERY_STATE_UUID, &atval[3]);
 	attrib_db_add(h++, &uuid, ATT_NONE, ATT_NOT_PERMITTED, atval, 5);