diff --git a/Lins.c b/Lins.c
index 47cfcbf..368437f 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) {