diff --git a/module_dfu/doc/building_xmos_dfu.rst b/module_dfu/doc/building_xmos_dfu.rst
index 769fffe1..64716c4e 100644
--- a/module_dfu/doc/building_xmos_dfu.rst
+++ b/module_dfu/doc/building_xmos_dfu.rst
@@ -1,6 +1,11 @@
+.. _usb_audiosec_building_xmos_dfu:
+
 Building the XMOS DFU loader - OS X
 ===================================
 
+The XMOS DFU loader is provided as source provided as part of the USB Audio
+framework, located in sc_usb_audio/module_dfu/host/xmos_dfu_osx.
+
 The loader is compiled using libusb, the code for the loader is contained in the
 file ``xmosdfu.cpp``
 
diff --git a/module_dfu/doc/xmos_dfu.rst b/module_dfu/doc/xmos_dfu.rst
index 4a001f00..772cc4a8 100644
--- a/module_dfu/doc/xmos_dfu.rst
+++ b/module_dfu/doc/xmos_dfu.rst
@@ -1,6 +1,9 @@
 Using the DFU loader - OS X (via the XMOS DFU loader)
 =====================================================
 
+The XMOS DFU loader is provided as source as part of the XMOS USB Audio software
+framework, see :ref:`usb_audiosec_building_xmos_dfu`.
+
 Set up the image loader
 -----------------------