diff --git a/Blob.h b/Blob.h
index 99932df..00e765e 100644
--- a/Blob.h
+++ b/Blob.h
@@ -95,7 +95,7 @@ namespace Alepha::Hydrogen  ::detail::  Blob_m
 			~Blob() { reset(); }
 
 			using StorageReservation= IndirectStorage;
-			StorageReservation reservation() const { return storage; }
+			const StorageReservation &reservation() const { return storage; }
 
 			auto
 			swap_lens() noexcept