diff --git a/src/core/lv_obj_draw.h b/src/core/lv_obj_draw.h
index 4dccb7bf6..27310b8a2 100644
--- a/src/core/lv_obj_draw.h
+++ b/src/core/lv_obj_draw.h
@@ -43,7 +43,7 @@ typedef struct
     lv_draw_arc_dsc_t *  arc_dsc;
     const lv_point_t * p1;
     const lv_point_t * p2;
-    const lv_coord_t * radius;
+    lv_coord_t radius;
     char text[16];
     int32_t value;
     uint32_t id;
diff --git a/src/widgets/lv_arc.c b/src/widgets/lv_arc.c
index d66a3c14b..ded27ff6a 100644
--- a/src/widgets/lv_arc.c
+++ b/src/widgets/lv_arc.c
@@ -695,7 +695,7 @@ static void lv_arc_draw(lv_event_t * e)
         lv_obj_init_draw_arc_dsc(obj, LV_PART_MAIN, &arc_dsc);
 
         obj_draw_dsc.part = LV_PART_MAIN;
-        obj_draw_dsc.p1 = center;
+        obj_draw_dsc.p1 = &center;
         obj_draw_dsc.radius = arc_r;
         obj_draw_dsc.arc_dsc = &arc_dsc;
         lv_event_send(obj, LV_EVENT_DRAW_PART_BEGIN, &obj_draw_dsc);
@@ -719,7 +719,7 @@ static void lv_arc_draw(lv_event_t * e)
         lv_obj_init_draw_arc_dsc(obj, LV_PART_INDICATOR, &arc_dsc);
 
         obj_draw_dsc.part = LV_PART_INDICATOR;
-        obj_draw_dsc.p1 = center;
+        obj_draw_dsc.p1 = &center;
         obj_draw_dsc.radius = indic_r;
         obj_draw_dsc.arc_dsc = &arc_dsc;
         lv_event_send(obj, LV_EVENT_DRAW_PART_BEGIN, &obj_draw_dsc);
@@ -740,7 +740,7 @@ static void lv_arc_draw(lv_event_t * e)
 
     obj_draw_dsc.part = LV_PART_KNOB;
     obj_draw_dsc.draw_area = &knob_area;
-    obj_draw_dsc.arc_dsc = &knob_rect_dsc;
+    obj_draw_dsc.rect_dsc = &knob_rect_dsc;
     lv_event_send(obj, LV_EVENT_DRAW_PART_BEGIN, &obj_draw_dsc);
 
     lv_draw_rect(&knob_area, clip_area, &knob_rect_dsc);
diff --git a/src/widgets/lv_bar.c b/src/widgets/lv_bar.c
index 131fb738e..b1f396942 100644
--- a/src/widgets/lv_bar.c
+++ b/src/widgets/lv_bar.c
@@ -395,7 +395,7 @@ static void draw_indic(lv_event_t * e)
     lv_obj_draw_dsc_init(&obj_draw_dsc, clip_area);
     obj_draw_dsc.part = LV_PART_INDICATOR;
     obj_draw_dsc.rect_dsc = &draw_rect_dsc;
-	obj_draw_dsc.draw_area = bar->indic_area;
+	obj_draw_dsc.draw_area = &bar->indic_area;
 
 	lv_event_send(obj, LV_EVENT_DRAW_PART_BEGIN, &obj_draw_dsc);