diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5b43227..b2bdc66 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -182,7 +182,7 @@ list(APPEND sources "${CMAKE_CURRENT_BINARY_DIR}/git_revision.cpp")
 list(APPEND sources ${fc_headers})
 
 add_subdirectory( vendor/easylzma )
-add_subdirectory( vendor/udt4 )
+#add_subdirectory( vendor/udt4 )
 
 setup_library( fc SOURCES ${sources} LIBRARY_TYPE STATIC DONT_INSTALL_LIBRARY )