diff --git a/lib/cpp/CMakeLists.txt b/lib/cpp/CMakeLists.txt
index c84e6e2..13b41c5 100755
--- a/lib/cpp/CMakeLists.txt
+++ b/lib/cpp/CMakeLists.txt
@@ -54,8 +54,6 @@
    src/thrift/transport/TServerSocket.cpp
    src/thrift/transport/TTransportUtils.cpp
    src/thrift/transport/TBufferTransports.cpp
-   src/thrift/transport/TWebSocketServer.h
-   src/thrift/transport/TWebSocketServer.cpp
    src/thrift/transport/SocketCommon.cpp
    src/thrift/server/TConnectedClient.cpp
    src/thrift/server/TServerFramework.cpp
@@ -102,6 +100,8 @@
     list(APPEND thriftcpp_SOURCES
        src/thrift/transport/TSSLSocket.cpp
        src/thrift/transport/TSSLServerSocket.cpp
+       src/thrift/transport/TWebSocketServer.h
+       src/thrift/transport/TWebSocketServer.cpp
     )
     if(TARGET OpenSSL::SSL OR TARGET OpenSSL::Crypto)
         if(TARGET OpenSSL::SSL)