diff --git a/Src/fc7xxx_driver_flexcan.c b/Src/fc7xxx_driver_flexcan.c
index ef5efb3..fb2642a 100644
--- a/Src/fc7xxx_driver_flexcan.c
+++ b/Src/fc7xxx_driver_flexcan.c
@@ -2022,11 +2022,13 @@ FLEXCAN_ErrorType FLEXCAN_Stop(uint8_t u8CanIndex)
     return tRetVal;
 }
 
-
+#ifndef USING_BOOT
 #include "cmsis_os2.h"
 
 extern osMessageQueueId_t txDataQueueCan0;
 extern osMessageQueueId_t txDataQueueCan1;
+#endif
+
 /**
  * @brief Transmit data, if tx disable, must call FLEXCAN_TransmitProcess after transmiting
  *
@@ -2165,7 +2167,7 @@ FLEXCAN_ErrorType FLEXCAN_TransmitData(uint8_t u8CanIndex, const FLEXCAN_TxMsgTy
                 /* CODE set 0x0C to transmit */
                 FLEXCAN_MB_CODE_SET(u32TempAddr, 0x0CU);
 
-
+#ifndef USING_BOOT
                 if (u8CanIndex == 0) {
                     uint8_t u8TxHandler;
                     if (osMessageQueueGet(txDataQueueCan0, &u8TxHandler, NULL, pTxMsg->bWaitTxCompleted) == osOK) {
@@ -2179,7 +2181,7 @@ FLEXCAN_ErrorType FLEXCAN_TransmitData(uint8_t u8CanIndex, const FLEXCAN_TxMsgTy
 
                     }
                 }
-
+#endif
 /*
                 if (pTxMsg->bWaitTxCompleted)
                 {