diff --git a/port/arduino/Makefile b/port/arduino/Makefile
index 982df217f..e8d902231 100644
--- a/port/arduino/Makefile
+++ b/port/arduino/Makefile
@@ -10,8 +10,8 @@ BTSTACK_PACKAGE=/tmp/btstack
 ARCHIVE=btstack-arduino-${VERSION}.zip
 
 SRC_FILES  = btstack_memory.c btstack_linked_list.c btstack_memory_pool.c btstack_run_loop.c
-SRC_FILES += hci_dump.c hci.c hci_cmd.c  btstack_util.c l2cap.c
-BLE_FILES  =  ad_parser.c att_db.c att_server.c att_dispatch.c att_db_util.c le_device_db_memory.c gatt_client.c
+SRC_FILES += hci_dump.c hci.c hci_cmd.c  btstack_util.c l2cap.c ad_parser.c
+BLE_FILES  = att_db.c att_server.c att_dispatch.c att_db_util.c le_device_db_memory.c gatt_client.c
 BLE_FILES += sm.c ancs_client.h ancs_client.c
 PORT_FILES = btstack_config.h bsp_arduino_em9301.cpp BTstack.cpp BTstack.h
 EMBEDDED_FILES = btstack_run_loop_embedded.c hci_transport_h4_embedded.c btstack_uart_block_embedded.c