diff --git a/include/fc/io/iostream.hpp b/include/fc/io/iostream.hpp
index 9fa592b..3e68440 100644
--- a/include/fc/io/iostream.hpp
+++ b/include/fc/io/iostream.hpp
@@ -1,5 +1,6 @@
 #pragma once
 #include <memory>
+#include <string>
 
 namespace fc {
 
diff --git a/include/fc/network/http/connection.hpp b/include/fc/network/http/connection.hpp
index 8a34076..466d111 100644
--- a/include/fc/network/http/connection.hpp
+++ b/include/fc/network/http/connection.hpp
@@ -1,5 +1,6 @@
 #pragma once
 #include <memory>
+#include <string>
 #include <vector>
 
 namespace fc { 
diff --git a/include/fc/network/tcp_socket.hpp b/include/fc/network/tcp_socket.hpp
index 59fcb73..fe6b837 100644
--- a/include/fc/network/tcp_socket.hpp
+++ b/include/fc/network/tcp_socket.hpp
@@ -51,7 +51,7 @@ namespace fc {
       friend class tcp_server;
       class impl;
       #ifdef _WIN64
-      fc::fwd<impl,0x81> my;
+      fc::fwd<impl,0x88> my;
       #else
       fc::fwd<impl,0x54> my;
       #endif