diff --git a/drivers/staging/vt6655/mac.c b/drivers/staging/vt6655/mac.c
index 955dbfebe170..122a6a3f6003 100644
--- a/drivers/staging/vt6655/mac.c
+++ b/drivers/staging/vt6655/mac.c
@@ -71,7 +71,6 @@
 #include "tmacro.h"
 #include "mac.h"
 
-unsigned short TxRate_iwconfig;//2008-5-8 <add> by chester
 /*---------------------  Static Classes  ----------------------------*/
 
 /*---------------------  Static Variables  --------------------------*/
diff --git a/drivers/staging/vt6655/mac.h b/drivers/staging/vt6655/mac.h
index 5391277a1a19..23162a90e9b8 100644
--- a/drivers/staging/vt6655/mac.h
+++ b/drivers/staging/vt6655/mac.h
@@ -970,7 +970,6 @@ do {								\
 
 /*---------------------  Export Functions  --------------------------*/
 
-extern unsigned short TxRate_iwconfig;//2008-5-8 <add> by chester
 void MACvReadAllRegs(void __iomem *dwIoBase, unsigned char *pbyMacRegs);
 
 bool MACbIsRegBitsOn(void __iomem *dwIoBase, unsigned char byRegOfs, unsigned char byTestBits);