diff --git a/Src/SerialPortFlagchip.c b/Src/SerialPortFlagchip.c
index 003525e..53fd3d2 100644
--- a/Src/SerialPortFlagchip.c
+++ b/Src/SerialPortFlagchip.c
@@ -105,9 +105,10 @@ void vSerialPortInitDMA(
 
     NVIC_SetPriorityGrouping(NVIC_PRIORITY_GROUP_4);
 
+    NVIC_EnableIRQ(IRQ_DMA);
     NVIC_SetPriority(DMA_Error_IRQn, IRQ_DMA_PRIORITY);
     NVIC_SetPriority(IRQ_DMA, IRQ_DMA_PRIORITY);
-    NVIC_EnableIRQ(IRQ_DMA);
+
 
     FCUART_ErrorType tRetVal;
     uint32_t u32PccFuncClk;
@@ -152,8 +153,8 @@ void vSerialPortInitDMA(
 
             tRetVal = FCUART_SetInterrupt(UART_INDEX, &env->tInterruptCfg);
 
-            NVIC_SetPriority(IRQ_UART, UART_PRIORITY);
             NVIC_EnableIRQ(IRQ_UART);
+            NVIC_SetPriority(IRQ_UART, UART_PRIORITY);
 
             tRetVal = FCUART_StartReceive(UART_INDEX);