diff --git a/README.markdown b/README.markdown
index 6b89d07..c0aeb25 100644
--- a/README.markdown
+++ b/README.markdown
@@ -4,7 +4,7 @@
 
 A very simple web server providing an HTTP interface to Redis. It uses [hiredis](https://github.com/antirez/hiredis), [jansson](https://github.com/akheron/jansson), [libevent](http://monkey.org/~provos/libevent/), and [http-parser](https://github.com/ry/http-parser/).
 
-Webdis depends on libevent-dev. You can install it on Ubuntu by typing `sudo apt-get install libevent-dev` or on OS X by typing `brew install libevent`.
+Webdis depends on libevent-dev. You can install it on Ubuntu by typing `sudo apt-get install libevent-dev` or on macOS by typing `brew install libevent`.
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