diff --git a/lvgl_tft/il3820.c b/lvgl_tft/il3820.c
index 71b3970..45ae276 100644
--- a/lvgl_tft/il3820.c
+++ b/lvgl_tft/il3820.c
@@ -153,7 +153,7 @@ void il3820_flush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_m
  * the display buffer.
  * BIT_CLEAR(byte_index, bit_index) sets the bit_index pixel at the byte_index
  * of the display buffer. */ 		
-void il3820_set_px_cb(struct _disp_drv_t * disp_drv, uint8_t* buf,
+void il3820_set_px_cb(lv_disp_drv_t * disp_drv, uint8_t* buf,
     lv_coord_t buf_w, lv_coord_t x, lv_coord_t y,
     lv_color_t color, lv_opa_t opa)
 {
@@ -185,7 +185,7 @@ void il3820_set_px_cb(struct _disp_drv_t * disp_drv, uint8_t* buf,
 }
 
 /* Required by LVGL */
-void il3820_rounder(struct _disp_drv_t * disp_drv, lv_area_t *area) {
+void il3820_rounder(lv_disp_drv_t * disp_drv, lv_area_t *area) {
     area->x1 = area->x1 & ~(0x7);
     area->x2 = area->x2 |  (0x7);
 }
diff --git a/lvgl_tft/il3820.h b/lvgl_tft/il3820.h
index 3969d8f..e0b73cd 100644
--- a/lvgl_tft/il3820.h
+++ b/lvgl_tft/il3820.h
@@ -100,8 +100,8 @@ extern "C"
 void il3820_init(void);
 void il3820_flush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_map);
 void il3820_fullflush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_map);
-void il3820_rounder(struct _disp_drv_t * disp_drv, lv_area_t *area);
-void il3820_set_px_cb(struct _disp_drv_t * disp_drv, uint8_t * buf, lv_coord_t buf_w, lv_coord_t x, lv_coord_t y, lv_color_t color, lv_opa_t opa);
+void il3820_rounder(lv_disp_drv_t * disp_drv, lv_area_t *area);
+void il3820_set_px_cb(lv_disp_drv_t * disp_drv, uint8_t * buf, lv_coord_t buf_w, lv_coord_t x, lv_coord_t y, lv_color_t color, lv_opa_t opa);
 void il3820_sleep_in(void);
 
 #ifdef __cplusplus