diff --git a/bsp/lpc176x/drivers/sd.c b/bsp/lpc176x/drivers/sd.c
index 3619f8417240edfe5b7971d009dcd2b7ad640afd..61e34ba43a6b2ae2021bf644f268e48b31538c61 100644
--- a/bsp/lpc176x/drivers/sd.c
+++ b/bsp/lpc176x/drivers/sd.c
@@ -32,7 +32,7 @@ static uint8_t  LPC17xx_SD_SendCmd(uint8_t cmd, uint32_t arg);
 static bool     LPC17xx_SD_ReadSector(uint32_t sector, uint8_t *buff, uint32_t count);
 static bool     LPC17xx_SD_ReadDataBlock(uint8_t *buff,    uint32_t cnt);
 static bool     LPC17xx_SD_WriteSector(uint32_t sector, const uint8_t *buff, uint32_t count);
-static bool     LPC17xx_SD_WirteDataBlock(const uint8_t *buff, uint8_t token);
+static bool     LPC17xx_SD_WriteDataBlock(const uint8_t *buff, uint8_t token);
 static bool     LPC17xx_SD_ReadCfg(SDCFG *cfg);
 static bool     LPC17xx_SD_WaitForReady(void);
 
@@ -279,7 +279,7 @@ static bool LPC17xx_SD_WriteSector(uint32_t sector, const uint8_t *buff, uint32_
     if (count == 1)     /* Single block write */
     {
         if ((LPC17xx_SD_SendCmd(WRITE_BLOCK, sector) == 0)
-                && LPC17xx_SD_WirteDataBlock(buff, TOKEN_SINGLE_BLOCK))
+                && LPC17xx_SD_WriteDataBlock(buff, TOKEN_SINGLE_BLOCK))
             count = 0;
     }
     else                    /* Multiple block write */
@@ -289,12 +289,12 @@ static bool LPC17xx_SD_WriteSector(uint32_t sector, const uint8_t *buff, uint32_
         {
             do
             {
-                if (!LPC17xx_SD_WirteDataBlock(buff, TOKEN_MULTI_BLOCK)) break;
+                if (!LPC17xx_SD_WriteDataBlock(buff, TOKEN_MULTI_BLOCK)) break;
                 buff += 512;
             }
             while (--count);
 #if 1
-            if (!LPC17xx_SD_WirteDataBlock(0, TOKEN_STOP_TRAN)) /* STOP_TRAN token */
+            if (!LPC17xx_SD_WriteDataBlock(0, TOKEN_STOP_TRAN)) /* STOP_TRAN token */
                 count = 1;
 #else
             LPC17xx_SPI_SendByte(TOKEN_STOP_TRAN);
@@ -312,7 +312,7 @@ static bool LPC17xx_SD_WriteSector(uint32_t sector, const uint8_t *buff, uint32_
             0xFC -> multi block
             0xFD -> Stop
 *****************************************************************************/
-static bool LPC17xx_SD_WirteDataBlock(const uint8_t *buff, uint8_t token)
+static bool LPC17xx_SD_WriteDataBlock(const uint8_t *buff, uint8_t token)
 {
     uint8_t resp, i;