diff --git a/dali/dfu/dfuwu.cmake b/dali/dfu/dfuwu.cmake
index 8f9179de40d..6ef5cd1470b 100644
--- a/dali/dfu/dfuwu.cmake
+++ b/dali/dfu/dfuwu.cmake
@@ -37,6 +37,7 @@ include_directories (
          ./../../system/include 
          ./../../system/jlib 
          ./../../common/workunit 
+         ./../../esp/clients/ws_dfsclient
          ${HPCC_SOURCE_DIR}/system/security/shared       #seclib.hpp
          )