diff --git a/pages/osx/brew-cask.md b/pages/osx/brew-cask.md
index 7bbc1653c0..37baa98951 100644
--- a/pages/osx/brew-cask.md
+++ b/pages/osx/brew-cask.md
@@ -19,7 +19,7 @@
 
 `brew cask outdated`
 
-- Upgrade an installed cask to its latest version:
+- Upgrade an installed cask (if no cask name is given, all installed casks are upgraded):
 
 `brew cask upgrade {{cask_name}}`