diff --git a/include/fc/asio.hpp b/include/fc/asio.hpp
index 0cc2d8fd4736c37957aeb725d21037410869d02e..471531af73fdde5d4d29346ad4d3efc179ec1bc4 100644
--- a/include/fc/asio.hpp
+++ b/include/fc/asio.hpp
@@ -81,7 +81,7 @@ namespace asio {
      */
     template<typename AsyncReadStream, typename MutableBufferSequence>
     size_t read( AsyncReadStream& s, const MutableBufferSequence& buf ) {
-        promise<size_t>::ptr p(new promise<size_t>("fc::asio::read"));
+        promise<size_t>::ptr p = promise<size_t>::create("fc::asio::read");
         boost::asio::async_read( s, buf, detail::read_write_handler(p) );
         return p->wait();
     }
diff --git a/src/network/rate_limiting.cpp b/src/network/rate_limiting.cpp
index 38b861898e35f1aebbbdb96343c97c7abe66217e..539a8f5ec4697bcfc1d47a4f952cb0778672b078 100644
--- a/src/network/rate_limiting.cpp
+++ b/src/network/rate_limiting.cpp
@@ -216,7 +216,7 @@ namespace fc
 
       rate_limiting_group_impl(uint32_t upload_bytes_per_second, uint32_t download_bytes_per_second,
                                uint32_t burstiness_in_seconds = 1);
-      ~rate_limiting_group_impl();
+      virtual ~rate_limiting_group_impl();
 
       virtual size_t readsome(boost::asio::ip::tcp::socket& socket, char* buffer, size_t length) override;
       virtual size_t readsome(boost::asio::ip::tcp::socket& socket, const std::shared_ptr<char>& buffer, size_t length, size_t offset) override;