diff --git a/dll/win32/itss/CMakeLists.txt b/dll/win32/itss/CMakeLists.txt
index a6179091007..2014272fb3a 100644
--- a/dll/win32/itss/CMakeLists.txt
+++ b/dll/win32/itss/CMakeLists.txt
@@ -17,6 +17,7 @@ list(APPEND SOURCE
     protocol.c
     storage.c
     rsrc.rc
+    ${REACTOS_BINARY_DIR}/include/reactos/wine/itss_i.c
     ${CMAKE_CURRENT_BINARY_DIR}/itss_stubs.c
     ${CMAKE_CURRENT_BINARY_DIR}/itss.def)