diff --git a/SerialPorts.c b/SerialPorts.c
index ca7dcfe..2cb15ef 100644
--- a/SerialPorts.c
+++ b/SerialPorts.c
@@ -65,12 +65,12 @@ void UART5_IRQHandler() {
 }
 
 // RX
-void DMA1_Channel5_IRQHandler(void) {
+void DMA1_Channel1_IRQHandler(void) {
     SerialPort_IrqProcessing_DmaRxLoop(&SERIAL_PORTS.Rs232);
 }
 
 // TX
-void DMA1_Channel6_IRQHandler(void) {
+void DMA1_Channel2_IRQHandler(void) {
     SerialPort_IrqProcessing_DmaTx(&SERIAL_PORTS.Rs232);
 }
 
@@ -95,7 +95,7 @@ static void vSerialPort_InitUSART5(tSerialPortArtery *env) {
 
     vSerialPortInitDmaWithNameAndSniffer(
             env, UART5, 115200,
-            1, 5, 1, 6,
+            1, 1, 1, 2,
             false, 0xFF,
             buf_USART5_DMA, sizeof(buf_USART5_DMA),
             3200, 3200