diff --git a/include/osdep_service.h b/include/osdep_service.h
index 6f9895b..91921ab 100644
--- a/include/osdep_service.h
+++ b/include/osdep_service.h
@@ -74,8 +74,6 @@
 		spinlock_t lock;
 	};
 
-	typedef unsigned char	_buffer;
-
 	typedef struct	__queue	_queue;
 	typedef struct	list_head	_list;
 	typedef	struct	net_device * _nic_hdl;
diff --git a/include/rtw_recv.h b/include/rtw_recv.h
index bd56f41..1058e95 100644
--- a/include/rtw_recv.h
+++ b/include/rtw_recv.h
@@ -479,9 +479,9 @@ __inline static u8 *recvframe_pull_tail(union recv_frame *precvframe, sint sz)
 
 
 
-__inline static _buffer * get_rxbuf_desc(union recv_frame *precvframe)
+__inline static unsigned char *get_rxbuf_desc(union recv_frame *precvframe)
 {
-	_buffer * buf_desc;
+	unsigned char *buf_desc;
 
 	if (precvframe==NULL)
 		return NULL;
diff --git a/include/xmit_osdep.h b/include/xmit_osdep.h
index 5898d88..74aef2a 100644
--- a/include/xmit_osdep.h
+++ b/include/xmit_osdep.h
@@ -26,7 +26,7 @@
 struct pkt_file {
 	struct sk_buff *pkt;
 	size_t pkt_len;	 //the remainder length of the open_file
-	_buffer *cur_buffer;
+	unsigned char *cur_buffer;
 	u8 *buf_start;
 	u8 *cur_addr;
 	size_t buf_len;