diff --git a/Lins.c b/Lins.c
index 368437f..47cfcbf 100644
--- a/Lins.c
+++ b/Lins.c
@@ -276,9 +276,9 @@ static void Lin4CallbackHandler(uint8_t u8LinIndex, void *state) {
     LIN_PORTS.lin4.LinExtCallbackHandler(LIN_PORTS.lin4.envCallExtBack, u8LinIndex, state);
 }
 
-void FCUART2_RxTx_IRQHandler(void) {
-    LIN_DrvIRQHandler(LIN_PORTS.lin4.UART_INDEX);
-}
+//void FCUART2_RxTx_IRQHandler(void) {
+//    LIN_DrvIRQHandler(LIN_PORTS.lin4.UART_INDEX);
+//}
 
 tLinData *Lin4_Init(lin_callback_ext_t Lin_ExtCallbackHandler) {