diff --git a/Library/Homebrew/cmd/missing.rb b/Library/Homebrew/cmd/missing.rb
index 891846cb8d..8a1dc506df 100644
--- a/Library/Homebrew/cmd/missing.rb
+++ b/Library/Homebrew/cmd/missing.rb
@@ -3,7 +3,7 @@
 #:    given, check all installed brews.
 #:
 #:    If `--hide=`<hidden> is passed, act as if none of <hidden> are installed.
-#:    <hidden> should be a comma-seperated list of formulae.
+#:    <hidden> should be a comma-separated list of formulae.
 
 require "formula"
 require "tab"