diff --git a/Library/Homebrew/test/abstract_command_spec.rb b/Library/Homebrew/test/abstract_command_spec.rb
index 0b3b5e05a4..70bfd6656d 100644
--- a/Library/Homebrew/test/abstract_command_spec.rb
+++ b/Library/Homebrew/test/abstract_command_spec.rb
@@ -7,6 +7,7 @@ RSpec.describe Homebrew::AbstractCommand do
     before do
       cat = Class.new(described_class) do
         cmd_args do
+          description "test"
           switch "--foo"
           flag "--bar="
         end