diff --git a/lib/cpp/src/thrift/transport/TServerSocket.cpp b/lib/cpp/src/thrift/transport/TServerSocket.cpp
index 811076f..fe9f7e8 100755
--- a/lib/cpp/src/thrift/transport/TServerSocket.cpp
+++ b/lib/cpp/src/thrift/transport/TServerSocket.cpp
@@ -248,7 +248,7 @@
 
   // Defer accept
   #ifdef TCP_DEFER_ACCEPT
-  if (-1 == setsockopt(serverSocket_, SOL_SOCKET, TCP_DEFER_ACCEPT,
+  if (-1 == setsockopt(serverSocket_, IPPROTO_TCP, TCP_DEFER_ACCEPT,
                        &one, sizeof(one))) {
     int errno_copy = THRIFT_GET_SOCKET_ERROR;
     GlobalOutput.perror("TServerSocket::listen() setsockopt() TCP_DEFER_ACCEPT ", errno_copy);