diff --git a/README.md b/README.md
index de5fa13..4f34ee0 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@
 - [System debugging](#system-debugging)
 - [One-liners](#one-liners)
 - [Obscure but useful](#obscure-but-useful)
-- [MacOS only](#macos-only)
+- [MacOS X only](#macos-x-only)
 - [More resources](#more-resources)
 - [Disclaimer](#disclaimer)
 
@@ -33,7 +33,7 @@ but given the interest there, it seems it's worth using Github, where people mor
 Scope:
 
 - This guide is both for beginners and the experienced. The goals are *breadth* (everything important), *specificity* (give concrete examples of the most common case), and *brevity* (avoid things that aren't essential or digressions you can easily look up elsewhere). Every tip is essential in some situation or significantly saves time over alternatives.
-- This is written for Linux, with the exception of the "[MacOS only](#macos-only)" section. Many of the other items apply or can be installed on other Unices or MacOS (or even Cygwin).
+- This is written for Linux, with the exception of the "[MacOS X only](#macos-x-only)" section. Many of the other items apply or can be installed on other Unices or MacOS (or even Cygwin).
 - The focus is on interactive Bash, though many tips apply to other shells and to general Bash scripting.
 - It includes both "standard" Unix commands as well as ones that require special package installs -- so long as they are important enough to merit inclusion.