diff --git a/port/arduino/Makefile b/port/arduino/Makefile
index de3b7fcb2..88a9ff7ac 100644
--- a/port/arduino/Makefile
+++ b/port/arduino/Makefile
@@ -20,7 +20,7 @@ EM9301_C_FILES = btstack_chipset_em9301.c
 
 PATHS  = $(addprefix ${BTSTACK_ROOT}/src/,     ${SRC_C_FILES})
 PATHS += $(addprefix ${BTSTACK_ROOT}/src/ble/, ${BLE_C_FILES})
-PATHS += $(addprefix ${BTSTACK_ROOT}/src/ble/gatt-service/, ${BLE_GATT_FILES})
+PATHS += $(addprefix ${BTSTACK_ROOT}/src/ble/gatt-service/, ${BLE_GATT_C_FILES})
 PATHS += $(addprefix ${BTSTACK_ROOT}/platform/embedded/,    ${EMBEDDED_C_FILES})
 PATHS += $(addprefix ${BTSTACK_ROOT}/chipset/em9301/,       ${EM9301_C_FILES})
 PATHS += $(addprefix ${DIR}/, ${PORT_FILES})
diff --git a/port/arduino/examples/ANCS/ANCS.ino b/port/arduino/examples/ANCS/ANCS.ino
index f299902c6..2598de9bd 100644
--- a/port/arduino/examples/ANCS/ANCS.ino
+++ b/port/arduino/examples/ANCS/ANCS.ino
@@ -2,9 +2,9 @@
 #include <stdio.h>
 #include "ble/att_server.h"
 #include "ble/gatt_client.h"
-#include "ancs_client.h"
-#include "btstack_event.h"
+#include "ble/gatt-service/ancs_client.h"
 #include "ble/sm.h"
+#include "btstack_event.h"
 #include <SPI.h>
 
 /* 
@@ -75,7 +75,7 @@ void loop(void){
 void ancs_callback(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
     const char * attribute_name;
     if (hci_event_packet_get_type(packet) != HCI_EVENT_ANCS_META) return;
-    switch (hci_event_ancs_meta_get_subevent_code()]){
+    switch (hci_event_ancs_meta_get_subevent_code(packet)){
         case ANCS_SUBEVENT_CLIENT_CONNECTED:
             Serial.println("ANCS Client: Connected");
             break;