diff --git a/drivers/net/wireless/rt2x00/rt2800usb.h b/drivers/net/wireless/rt2x00/rt2800usb.h
index 6524d72631cde187c0d6d6b5364e46528830b055..8c88690c1537d8b4e1af8ea1d02bbb0a1555d605 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.h
+++ b/drivers/net/wireless/rt2x00/rt2800usb.h
@@ -40,7 +40,7 @@ struct rt2800_ops {
 				   void *value, const u32 length);
 	void (*register_multiwrite)(struct rt2x00_dev *rt2x00dev,
 				    const unsigned int offset,
-				    void *value, const u32 length);
+				    const void *value, const u32 length);
 
 	int (*regbusy_read)(struct rt2x00_dev *rt2x00dev,
 			    const unsigned int offset,
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.h b/drivers/net/wireless/rt2x00/rt2x00usb.h
index 9093516d9af1d7ede5b9d55013f2ae0a7c44f5ed..f6fb58f2ca7258fda1dcad217d5ef44f26c0e1de 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.h
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.h
@@ -340,12 +340,13 @@ static inline void rt2x00usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
  * through rt2x00usb_vendor_request_buff().
  */
 static inline void rt2x00usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
-					       const unsigned int offset,
-					       void *value, const u32 length)
+						 const unsigned int offset,
+						 const void *value,
+						 const u32 length)
 {
 	rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
 				      USB_VENDOR_REQUEST_OUT, offset,
-				      value, length,
+				      (void *)value, length,
 				      REGISTER_TIMEOUT32(length));
 }