diff --git a/README.md b/README.md
index 36c4b8bc..aed9025c 100644
--- a/README.md
+++ b/README.md
@@ -190,7 +190,7 @@ Enabled by default only on specific platforms:
 * `apt_get` – installs app from apt if it not installed;
 * `brew_install` – fixes formula name for `brew install`;
 * `brew_unknown_command` – fixes wrong brew commands, for example `brew docto/brew doctor`;
-* `brew_upgrade` – appends `-all` to `brew upgrade` as per Homebrew's new behaviour
+* `brew_upgrade` – appends `--all` to `brew upgrade` as per Homebrew's new behaviour
 * `pacman` – installs app with `pacman` or `yaourt` if it is not installed.
 
 Bundled, but not enabled by default: