diff --git a/Library/Homebrew/cmd/fetch.rb b/Library/Homebrew/cmd/fetch.rb
index 986c6e39cc..87c2b5d565 100644
--- a/Library/Homebrew/cmd/fetch.rb
+++ b/Library/Homebrew/cmd/fetch.rb
@@ -35,6 +35,7 @@ module Homebrew extend self
       begin
         f.verify_download_integrity the_tarball
       rescue ChecksumMismatchError => e
+        Homebrew.failed = true
         opoo "Formula reports different #{e.hash_type}: #{e.expected}"
       end
     end