diff --git a/include/picrin/cont.h b/include/picrin/cont.h
index 9fe4390f..f1b9cb80 100644
--- a/include/picrin/cont.h
+++ b/include/picrin/cont.h
@@ -16,7 +16,7 @@ struct pic_cont {
   pic_callinfo *ci, *ci_ptr;
   size_t ci_len;
 
-  struct pic_object **arena;
+  struct pic_object *arena[PIC_ARENA_SIZE];
   int arena_idx;
 
   pic_value result;
diff --git a/src/cont.c b/src/cont.c
index f897620e..0f9229ef 100644
--- a/src/cont.c
+++ b/src/cont.c
@@ -47,7 +47,6 @@ save_cont(pic_state *pic)
   cont->ci_ptr = (pic_callinfo *)pic_alloc(pic, sizeof(pic_callinfo) * cont->ci_len);
   memcpy(cont->ci_ptr, pic->cibase, sizeof(pic_callinfo) * cont->ci_len);
 
-  cont->arena = (struct pic_object **)pic_alloc(pic, sizeof(struct pic_object *) * PIC_ARENA_SIZE);
   cont->arena_idx = pic->arena_idx;
   memcpy(cont->arena, pic->arena, sizeof(struct pic_object *) * PIC_ARENA_SIZE);
 
diff --git a/src/gc.c b/src/gc.c
index 6a507f32..152cf061 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -336,7 +336,6 @@ gc_finalize_object(pic_state *pic, struct pic_object *obj)
     pic_free(pic, cont->stk_ptr);
     pic_free(pic, cont->st_ptr);
     pic_free(pic, cont->ci_ptr);
-    pic_free(pic, cont->arena);
     break;
   }
   case PIC_TT_NIL: