diff --git a/src/vm.c b/src/vm.c
index 1ac2aca84..19c40fedc 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -177,10 +177,7 @@ stack_extend_alloc(mrb_state *mrb, mrb_int room)
     size += room;
 #endif
 
-  newstack = (mrb_value *)mrb_realloc_simple(mrb, mrb->c->stbase, sizeof(mrb_value) * size);
-  if (newstack == NULL) {
-    mrb_exc_raise(mrb, mrb_obj_value(mrb->stack_err));
-  }
+  newstack = (mrb_value *)mrb_realloc(mrb, mrb->c->stbase, sizeof(mrb_value) * size);
   stack_clear(&(newstack[oldsize]), size - oldsize);
   envadjust(mrb, oldbase, newstack, oldsize);
   mrb->c->stbase = newstack;