diff --git a/drivers/staging/r8188eu/core/rtw_iol.c b/drivers/staging/r8188eu/core/rtw_iol.c
index 7292bab12607..b7ee3833c908 100644
--- a/drivers/staging/r8188eu/core/rtw_iol.c
+++ b/drivers/staging/r8188eu/core/rtw_iol.c
@@ -95,7 +95,7 @@ int rtw_IOL_append_WW_cmd(struct xmit_frame *xmit_frame, u16 addr, u16 value, u1
 	return rtw_IOL_append_cmds(xmit_frame, (u8 *)&cmd, cmd.length);
 }
 
-int _rtw_IOL_append_WD_cmd(struct xmit_frame *xmit_frame, u16 addr, u32 value, u32 mask)
+int rtw_IOL_append_WD_cmd(struct xmit_frame *xmit_frame, u16 addr, u32 value, u32 mask)
 {
 	struct ioreg_cfg cmd = {8, IOREG_CMD_WD_REG, 0x0, 0x0, 0x0};
 
diff --git a/drivers/staging/r8188eu/include/rtw_iol.h b/drivers/staging/r8188eu/include/rtw_iol.h
index c99d7d515109..9ad467759ef1 100644
--- a/drivers/staging/r8188eu/include/rtw_iol.h
+++ b/drivers/staging/r8188eu/include/rtw_iol.h
@@ -45,12 +45,10 @@ int rtw_IOL_append_WB_cmd(struct xmit_frame *xmit_frame, u16 addr,
 			  u8 value, u8 mask);
 int rtw_IOL_append_WW_cmd(struct xmit_frame *xmit_frame, u16 addr,
 			  u16 value, u16 mask);
-int _rtw_IOL_append_WD_cmd(struct xmit_frame *xmit_frame, u16 addr,
-			   u32 value, u32 mask);
+int rtw_IOL_append_WD_cmd(struct xmit_frame *xmit_frame, u16 addr,
+			  u32 value, u32 mask);
 int _rtw_IOL_append_WRF_cmd(struct xmit_frame *xmit_frame, u8 rf_path,
 			    u16 addr, u32 value, u32 mask);
-#define rtw_IOL_append_WD_cmd(xmit_frame, addr, value, mask)		\
-	_rtw_IOL_append_WD_cmd((xmit_frame), (addr), (value), (mask))
 #define rtw_IOL_append_WRF_cmd(xmit_frame, rf_path, addr, value, mask)	\
 	_rtw_IOL_append_WRF_cmd((xmit_frame),(rf_path), (addr), (value), (mask))