diff --git a/doc/build/tools.rst b/doc/build/tools.rst
index ec017229..5bfa05b 100644
--- a/doc/build/tools.rst
+++ b/doc/build/tools.rst
@@ -45,3 +45,12 @@
 
    $ make tools-only_defconfig
    $ make tools-only
+
+
+Building without Python
+-----------------------
+
+The tools-only builds bytes pylibfdt by default. To disable this, use the
+NO_PYTHON variable::
+
+   NO_PYTHON=1 make tools-only_defconfig tools-only