diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
index bf6f8c751..5577faa91 100644
--- a/doc/CMakeLists.txt
+++ b/doc/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.10)
 
-project(SOF_DOC)
+project(SOF_DOC NONE)
 
 set(SOF_ROOT_SOURCE_DIRECTORY "${PROJECT_SOURCE_DIR}/..")