diff --git a/src/mem/localalloc.h b/src/mem/localalloc.h
index 357e897..0ae59f1 100644
--- a/src/mem/localalloc.h
+++ b/src/mem/localalloc.h
@@ -344,6 +344,8 @@ namespace snmalloc
 
   public:
     constexpr LocalAllocator() = default;
+    LocalAllocator(const LocalAllocator&) = delete;
+    LocalAllocator& operator= (const LocalAllocator&) = delete;
 
     /**
      * Initialise the allocator.  For allocators that support local