diff --git a/src/misc/lv_area.h b/src/misc/lv_area.h
index 0bd0aefdc5..7407b16f9d 100644
--- a/src/misc/lv_area.h
+++ b/src/misc/lv_area.h
@@ -234,9 +234,9 @@ void lv_area_align(const lv_area_t * base, lv_area_t * to_align, lv_align_t alig
  **********************/
 
 #if LV_USE_LARGE_COORD
-#define _LV_COORD_TYPE_SHIFT    (29)
+#define _LV_COORD_TYPE_SHIFT    (29U)
 #else
-#define _LV_COORD_TYPE_SHIFT    (13)
+#define _LV_COORD_TYPE_SHIFT    (13U)
 #endif
 
 #define _LV_COORD_TYPE_MASK     (3 << _LV_COORD_TYPE_SHIFT)