diff --git a/Library/Homebrew/cmd/tap.rb b/Library/Homebrew/cmd/tap.rb
index a2df9fe799..85aef45a01 100644
--- a/Library/Homebrew/cmd/tap.rb
+++ b/Library/Homebrew/cmd/tap.rb
@@ -38,7 +38,8 @@ module Homebrew
         switch "--custom-remote",
                description: "Install or change a tap with a custom remote. Useful for mirrors."
         switch "--repair",
-               description: "Migrate tapped formulae from symlink-based to directory-based structure."
+               description: "Add missing symlinks to tap manpages and shell completions. Correct git remote " \
+                            "refs for any taps where upstream HEAD branch has been renamed."
         switch "--eval-all",
                description: "Evaluate all the formulae, casks and aliases in the new tap to check validity. " \
                             "Implied if `$HOMEBREW_EVAL_ALL` is set."