diff --git a/cruft/util/alloc/chunked.hpp b/cruft/util/alloc/chunked.hpp
index 0c9daba0..65427a75 100644
--- a/cruft/util/alloc/chunked.hpp
+++ b/cruft/util/alloc/chunked.hpp
@@ -27,6 +27,12 @@ namespace cruft::alloc {
     public:
         static constexpr std::size_t DEFAULT_CHUNK_SIZE = 4096;
 
+        chunked (chunked const&) = default;
+        chunked& operator= (chunked const&) = default;
+
+        chunked (chunked&&) noexcept = default;
+        chunked& operator= (chunked&&) noexcept = default;
+
         explicit chunked (std::size_t initial_size);
         chunked (std::size_t initial_size, std::size_t chunk_size);
         ~chunked () noexcept;