diff --git a/include/mruby/gc.h b/include/mruby/gc.h
index 9f9bba410..db2d5ad4a 100644
--- a/include/mruby/gc.h
+++ b/include/mruby/gc.h
@@ -48,7 +48,6 @@ typedef struct mrb_heap_page {
   struct mrb_heap_page *free_next;
   struct mrb_heap_page *free_prev;
   mrb_bool old:1;
-  void *objects[];
 } mrb_heap_page;
 
 #ifdef _MSC_VER
diff --git a/src/gc.c b/src/gc.c
index a6ff0c588..0e7f1cfcb 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -214,7 +214,7 @@ mrb_static_assert(MRB_GC_RED <= GC_COLOR_MASK);
 #define other_white_part(s) ((s)->current_white_part ^ GC_WHITES)
 #define is_dead(s, o) (((o)->color & other_white_part(s) & GC_WHITES) || (o)->tt == MRB_TT_FREE)
 
-#define objects(p) ((RVALUE *)p->objects)
+#define objects(p) ((RVALUE *)&p[1])
 
 mrb_noreturn void mrb_raise_nomemory(mrb_state *mrb);