diff --git a/SerialPorts.c b/SerialPorts.c
index 9f1f56d..9f3f6da 100644
--- a/SerialPorts.c
+++ b/SerialPorts.c
@@ -113,15 +113,15 @@ static void vSerialPort_InitUSART2(tSerialPortFlagchip *env) {
             buf_USART2_TRANSMITTED,
             sizeof(buf_USART2_TRANSMITTED),
 
-            DMA_CHANNEL_0,
+            DMA_CHANNEL_5,
             DMA_REQ_FCUART2_RX,
 
             buf_USART2_DMA,
             sizeof(buf_USART2_DMA),
 
-            DMA0_IRQn,
+            DMA5_IRQn,
             0xFF, // IRQ_DMA_PRIORITY
-            DMA0_IRQn, // IRQ_DMA_CHANNEL_PRIORITY
+            DMA5_IRQn, // IRQ_DMA_CHANNEL_PRIORITY
 
             1024,
             0,