diff --git a/Library/Homebrew/dev-cmd/test-bot.rb b/Library/Homebrew/dev-cmd/test-bot.rb
index 2704aa6702ede9b0e44afc1372aeeb08ba9771e1..4168475f4ee6f779e49a97a16427febca6913f3c 100644
--- a/Library/Homebrew/dev-cmd/test-bot.rb
+++ b/Library/Homebrew/dev-cmd/test-bot.rb
@@ -702,7 +702,7 @@ module Homebrew
       @category = __method__
       return if @skip_homebrew
 
-      if @tap.nil? && (@test_default_formula || Array(@formulae).empty?)
+      if @tap.nil? && (@repository == HOMEBREW_REPOSITORY || Array(@formulae).empty?)
         tests_args = ["--official-cmd-taps"]
         tests_args_no_compat = []
         tests_args_no_compat << "--coverage" if ARGV.include?("--coverage")