diff --git a/GLFW-4.0-sketchbook.md b/GLFW-4.0-sketchbook.md
index ce854fa..805c569 100644
--- a/GLFW-4.0-sketchbook.md
+++ b/GLFW-4.0-sketchbook.md
@@ -11,7 +11,7 @@
 - Cleanup of signed vs. unsigned
 - Rename `GLFW_CLIENT_API` to `GLFW_CONTEXT_TYPE`
 - Removal of `GLFW_CURSOR_HIDDEN`
-- Change OS X prefix to `OSX`
+- Change macOS prefix to `MACOS`
 - Separate video mode from window
 - Remove auto-iconification
 - Revert to map monitors to CRTCs unless major legacy Oculus clones appear