diff --git a/library/rect.c b/library/rect.c
index f2c6a76..6769c59 100644
--- a/library/rect.c
+++ b/library/rect.c
@@ -11,11 +11,8 @@ double rect_area(void *self, void *parent)
 
 void rect_draw(void *self, void *parent)
 {
-    // struct _rect *pthis = (struct _rect *)parent;
-    // pthis->shape->vtb.draw(self, NULL);
-
-    struct _rect *pthis = container_of(parent, struct _rect, self);
-    pthis->shape->vtb.draw(pthis, NULL);
+    struct _rect *pthis = (struct _rect *)parent;
+    pthis->shape->vtb.draw(self, NULL);
 }
 
 double _rect_area(void *self, void *parent)