diff --git a/include/CMakeLists.txt b/include/CMakeLists.txt
index af287eba3b9bb6719f9313411ecf8f0ddd42b11f..c0db7a2c007d13394a06bede00d1c601ad83bef2 100644
--- a/include/CMakeLists.txt
+++ b/include/CMakeLists.txt
@@ -40,6 +40,8 @@ set(libcaosdb_INCL
     ${CMAKE_CURRENT_SOURCE_DIR}/caosdb/unary_rpc_handler.h
     ${CMAKE_CURRENT_SOURCE_DIR}/caosdb/utility.h
     ${CMAKE_CURRENT_SOURCE_DIR}/caosdb/file_transmission/register_file_upload_handler.h
+	# TODO this  file is still missing
+	# ${CMAKE_CURRENT_SOURCE_DIR}/caosdb/file_transmission/register_file_download_handler.h
     ${CMAKE_CURRENT_SOURCE_DIR}/caosdb/file_transmission/upload_request_handler.h
     ${CMAKE_CURRENT_SOURCE_DIR}/caosdb/file_transmission/download_request_handler.h
     ${CMAKE_CURRENT_SOURCE_DIR}/caosdb/file_transmission/file_writer.h