diff --git a/Library/Homebrew/cask/test/cask/cli/install_test.rb b/Library/Homebrew/cask/test/cask/cli/install_test.rb
index 2d09846b7f..138c497fbd 100644
--- a/Library/Homebrew/cask/test/cask/cli/install_test.rb
+++ b/Library/Homebrew/cask/test/cask/cli/install_test.rb
@@ -29,7 +29,7 @@ describe Hbc::CLI::Install do
 
     TestHelper.must_output(self, lambda {
       Hbc::CLI::Install.run("local-transmission", "")
-    }, %r{Warning: A Cask for local-transmission is already installed. Add the "--force" option to force re-install.})
+    }, %r{Warning: A Cask for local-transmission is already installed.})
   end
 
   it "allows double install with --force" do