diff --git a/include/fc/network/tcp_socket.hpp b/include/fc/network/tcp_socket.hpp
index f9dbce0..1159654 100644
--- a/include/fc/network/tcp_socket.hpp
+++ b/include/fc/network/tcp_socket.hpp
@@ -51,7 +51,7 @@ namespace fc {
       #ifdef _WIN64
       fc::fwd<impl,0x78> my;
       #else
-      fc::fwd<impl,0x4c> my;
+      fc::fwd<impl,0x54> my;
       #endif
   };
   typedef std::shared_ptr<tcp_socket> tcp_socket_ptr;