diff --git a/Function.h b/Function.h
index 19a5e9e..2d53582 100644
--- a/Function.h
+++ b/Function.h
@@ -37,12 +37,14 @@ template <class R, class... Args, size_t MaxSize> class Function<R(Args...), Max
 
   Function(const Function &other) {
     if (other) {
-      other.manager(data, other.data, Operation::Clone);
+      other.manager(&data, &other.data, Operation::Clone);
       invoker = other.invoker;
       manager = other.manager;
     }
   }
 
+  Function(Function &other) : Function(const_cast<const Function&>(other)) {}
+
   Function(Function &&other) { other.swap(*this); }
 
   template <class F> Function(F &&f) {
@@ -108,7 +110,7 @@ template <class R, class... Args, size_t MaxSize> class Function<R(Args...), Max
   enum class Operation { Clone, Destroy };
 
   using Invoker = R (*)(void *, Args &&...);
-  using Manager = void (*)(void *, void *, Operation);
+  using Manager = void (*)(void *, const void *, Operation);
   using Storage = typename std::aligned_storage<MaxSize - sizeof(Invoker) - sizeof(Manager), 8>::type;
 
   template <typename F>
@@ -118,10 +120,10 @@ template <class R, class... Args, size_t MaxSize> class Function<R(Args...), Max
   }
 
   template <typename F>
-  static void manage(void *dest, void *src, Operation op) {
+  static void manage(void *dest, const void *src, Operation op) {
     switch (op) {
     case Operation::Clone:
-      new (dest) F(*static_cast<F *>(src));
+      new (dest) F(*static_cast<const F *>(src));
       break;
     case Operation::Destroy:
       static_cast<F *>(dest)->~F();