diff --git a/helio b/helio
index f9e28c79d..dbc921329 160000
--- a/helio
+++ b/helio
@@ -1 +1 @@
-Subproject commit f9e28c79d3f9234ab0f094a7101cad8b5847c184
+Subproject commit dbc921329877019d156995a56941ae03b69ad87a
diff --git a/src/server/tiering/disk_storage.cc b/src/server/tiering/disk_storage.cc
index 9f187187f..bb687f9c9 100644
--- a/src/server/tiering/disk_storage.cc
+++ b/src/server/tiering/disk_storage.cc
@@ -86,9 +86,11 @@ error_code DiskStorage::Open(string_view path) {
   alloc_.AddStorage(0, kInitialSize);
 
   auto* up = static_cast<UringProactor*>(ProactorBase::me());
-  if (int io_res = up->RegisterBuffers(absl::GetFlag(FLAGS_registered_buffer_size)); io_res < 0)
-    return error_code{-io_res, system_category()};
-
+  auto registered_buffer_size = absl::GetFlag(FLAGS_registered_buffer_size);
+  if (registered_buffer_size > 0) {
+    if (int io_res = up->RegisterBuffers(registered_buffer_size); io_res < 0)
+      return error_code{-io_res, system_category()};
+  }
   return {};
 }