diff --git a/src/core/lv_disp.h b/src/core/lv_disp.h
index d6a00e03b0..fdad3b7b7b 100644
--- a/src/core/lv_disp.h
+++ b/src/core/lv_disp.h
@@ -211,15 +211,6 @@ static inline void lv_scr_load(lv_obj_t * scr)
 #define LV_VER_RES lv_disp_get_ver_res(lv_disp_get_default())
 #endif
 
-/**
- * Same as Android's DIP. (Different name is chosen to avoid mistype between LV_DPI and LV_DIP)
- * 1 dip is 1 px on a 160 DPI screen
- * 1 dip is 2 px on a 320 DPI screen
- * https://stackoverflow.com/questions/2025282/what-is-the-difference-between-px-dip-dp-and-sp
- */
-#define _LV_DPX_CALC(dpi, n)   ((n) == 0 ? 0 :LV_MAX((( (dpi) * (n) + 80) / 160), 1)) /*+80 for rounding*/
-#define LV_DPX(n)   _LV_DPX_CALC(lv_disp_get_dpi(NULL), n)
-
 /**
  * Scale the given number of pixels (a distance or size) relative to a 160 DPI display
  * considering the DPI of the default display.
@@ -247,20 +238,6 @@ static inline lv_coord_t lv_disp_dpx(const lv_disp_t * disp, lv_coord_t n)
     return _LV_DPX_CALC(lv_disp_get_dpi(disp), n);
 }
 
-/**
- * Scale the given number of pixels (a distance or size) relative to a 160 DPI display
- * considering the DPI of the `obj`'s display.
- * It ensures that e.g. `lv_dpx(100)` will have the same physical size regardless to the
- * DPI of the display.
- * @param obj   an object whose display's dpi should be considered
- * @param n     the number of pixels to scale
- * @return      `n x current_dpi/160`
- */
-static inline lv_coord_t lv_dpx_obj(const lv_obj_t * obj, lv_coord_t n)
-{
-    return _LV_DPX_CALC(lv_disp_get_dpi(lv_obj_get_disp(obj)), n);
-}
-
 #ifdef __cplusplus
 } /*extern "C"*/
 #endif
diff --git a/src/hal/lv_hal.h b/src/hal/lv_hal.h
index cb63f3e736..167da1f4bd 100644
--- a/src/hal/lv_hal.h
+++ b/src/hal/lv_hal.h
@@ -20,6 +20,14 @@ extern "C" {
 /*********************
  *      DEFINES
  *********************/
+/**
+ * Same as Android's DIP. (Different name is chosen to avoid mistype between LV_DPI and LV_DIP)
+ * 1 dip is 1 px on a 160 DPI screen
+ * 1 dip is 2 px on a 320 DPI screen
+ * https://stackoverflow.com/questions/2025282/what-is-the-difference-between-px-dip-dp-and-sp
+ */
+#define _LV_DPX_CALC(dpi, n)   ((n) == 0 ? 0 :LV_MAX((( (dpi) * (n) + 80) / 160), 1)) /*+80 for rounding*/
+#define LV_DPX(n)   _LV_DPX_CALC(lv_disp_get_dpi(NULL), n)
 
 /**********************
  *      TYPEDEFS