diff --git a/module_dfu/doc/building_xmos_dfu.rst b/module_dfu/doc/building_xmos_dfu.rst
index fe34c9e0..db177023 100644
--- a/module_dfu/doc/building_xmos_dfu.rst
+++ b/module_dfu/doc/building_xmos_dfu.rst
@@ -1,7 +1,7 @@
 .. _usb_audiosec_building_xmos_dfu:
 
-Building the XMOS DFU loader - OS X
-===================================
+Building the XMOS DFU loader - macOS
+====================================
 
 The XMOS DFU loader is provided as source as part of the USB Audio
 framework, located in sc_usb_audio/module_dfu/host/xmos_dfu_osx.
diff --git a/module_dfu/doc/index.rst b/module_dfu/doc/index.rst
index 045a0a27..bb185281 100644
--- a/module_dfu/doc/index.rst
+++ b/module_dfu/doc/index.rst
@@ -6,5 +6,5 @@ DFU loader for XMOS USB AUDIO devices
     Overview <overview>
     Creating factory and upgrade images with XFLASH <factory_image>
     Using the DFU loader - Windows (via the Thesycon driver) <thesycon_dfu>
-    Using the DFU loader - OS X (via the XMOS DFU loader) <xmos_dfu>
-    Building the XMOS DFU loader - OS X <building_xmos_dfu>
+    Using the DFU loader - macOS (via the XMOS DFU loader) <xmos_dfu>
+    Building the XMOS DFU loader - macOS <building_xmos_dfu>
diff --git a/module_dfu/doc/xmos_dfu.rst b/module_dfu/doc/xmos_dfu.rst
index 086939c8..f32b79bb 100644
--- a/module_dfu/doc/xmos_dfu.rst
+++ b/module_dfu/doc/xmos_dfu.rst
@@ -1,5 +1,5 @@
-Using the DFU loader - OS X (via the XMOS DFU loader)
-=====================================================
+Using the DFU loader - macOS (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`.