diff --git a/CanPorts.c b/CanPorts.c
index af9edae..177dea1 100644
--- a/CanPorts.c
+++ b/CanPorts.c
@@ -59,6 +59,8 @@ static void vCanPort_InitCAN0RxTxPin() {
     GPIO_InitPins(GPIO_C, &tGpioInitStruct);
 }
 
+uint32_t IdCanFilter[2] = {PROTOCOL_XCP_ID, 1};
+
 static void vCanPort_InitCan0() {
     vCanPort_InitCAN0RxTxPin();
 
@@ -76,6 +78,9 @@ static void vCanPort_InitCan0() {
 
             (uint8_t *)&g_aRxDataBuf[0],
 
+            2,
+            IdCanFilter,
+
             DMA1_IRQn,
             0x55,
             1,
diff --git a/CanPorts.h b/CanPorts.h
index fdcaf4d..edf31bf 100644
--- a/CanPorts.h
+++ b/CanPorts.h
@@ -7,6 +7,10 @@
 
 #include "CanSerialPortFrame.h"
 
+#define PROTOCOL_XCP_ID 0x123
+
+#define PROTOCOL_XCP 0
+
 typedef struct {
     tCanSerialPortFrameFlagchip Can0;
     tSerialPortFrameIO Can0_IO;