diff --git a/hgdriver/hgdev/hg_scanner_239.h b/hgdriver/hgdev/hg_scanner_239.h
index eb02786..2302980 100644
--- a/hgdriver/hgdev/hg_scanner_239.h
+++ b/hgdriver/hgdev/hg_scanner_239.h
@@ -114,6 +114,6 @@ public:
 
 	virtual int set_speed_mode(int data) override;				 //设置速度模式          /*/ data:100,110,120
 	virtual int set_dpi_color_check_val(void) override;			 //设置畸变矫正值
-	virtual int get_dpi_color_check_val(void);			 //获取畸变矫正		
+	virtual int get_dpi_color_check_val(int &data);			 //获取畸变矫正		
 };