diff --git a/alloc/arena.hpp b/alloc/arena.hpp
index fd3a3a2e..0a96b2f7 100644
--- a/alloc/arena.hpp
+++ b/alloc/arena.hpp
@@ -94,11 +94,24 @@ namespace cruft::alloc {
     class owned {
     public:
         template <typename ...ArgsT>
-        owned (ArgsT &&...args):
-            m_store (std::forward<ArgsT> (args)...),
-            m_arena {m_store}
+        explicit owned (ArgsT &&...args)
+            : m_store (std::forward<ArgsT> (args)...)
+            , m_arena {m_store}
         { ; }
 
+        owned (owned &&rhs)
+            : m_store (std::move (rhs.m_store))
+            , m_arena (m_store)
+        { ; }
+
+        owned& operator= (owned &&rhs)
+        {
+            m_store = std::move (rhs.m_store);
+        }
+
+        owned (owned const&) = delete;
+        owned& operator= (owned const&) = delete;
+
         template <typename T, typename ...ArgsT>
         decltype(auto) acquire (ArgsT &&...args)
         { return m_arena.template acquire<T,ArgsT...> (std::forward<ArgsT> (args)...); }
@@ -119,6 +132,6 @@ namespace cruft::alloc {
         AllocT m_store;
         arena<AllocT> m_arena;
     };
-};
+}
 
 #endif