diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index bf729437..45ddc45e 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp
@@ -2059,7 +2059,7 @@ bool Blockchain::check_tx_inputs(const transaction& tx, uint64_t* pmax_used_bloc
   boost::asio::io_service ioservice;
   boost::thread_group threadpool;
 
-  std::auto_ptr < boost::asio::io_service::work > work(new boost::asio::io_service::work(ioservice));
+  std::unique_ptr < boost::asio::io_service::work > work(new boost::asio::io_service::work(ioservice));
   if(threads > 1)
   {
     for (int i = 0; i < threads; i++)
diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index 5a9b96bb..f00d3f7f 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -228,7 +228,7 @@ void wallet2::process_new_transaction(const cryptonote::transaction& tx, uint64_
           // process the other outs from that tx
           boost::asio::io_service ioservice;
           boost::thread_group threadpool;
-          std::auto_ptr < boost::asio::io_service::work > work(new boost::asio::io_service::work(ioservice));
+          std::unique_ptr < boost::asio::io_service::work > work(new boost::asio::io_service::work(ioservice));
           for (int i = 0; i < threads; i++)
           {
             threadpool.create_thread(boost::bind(&boost::asio::io_service::run, &ioservice));
@@ -264,7 +264,7 @@ void wallet2::process_new_transaction(const cryptonote::transaction& tx, uint64_
     {
       boost::asio::io_service ioservice;
       boost::thread_group threadpool;
-      std::auto_ptr < boost::asio::io_service::work > work(new boost::asio::io_service::work(ioservice));
+      std::unique_ptr < boost::asio::io_service::work > work(new boost::asio::io_service::work(ioservice));
       for (int i = 0; i < threads; i++)
       {
         threadpool.create_thread(boost::bind(&boost::asio::io_service::run, &ioservice));