diff --git a/Library/Homebrew/dev-cmd/audit.rb b/Library/Homebrew/dev-cmd/audit.rb
index 443a458160..ff6b17b45c 100644
--- a/Library/Homebrew/dev-cmd/audit.rb
+++ b/Library/Homebrew/dev-cmd/audit.rb
@@ -309,7 +309,7 @@ class FormulaAuditor
         unversioned_name = unversioned_formula.basename(".rb")
         problem "#{formula} is versioned but no #{unversioned_name} formula exists"
       end
-    elsif ARGV.build_stable? &&
+    elsif ARGV.build_stable? && formula.stable? &&
           !(versioned_formulae = Dir[formula.path.to_s.gsub(/\.rb$/, "@*.rb")]).empty?
       versioned_aliases = formula.aliases.grep(/.@\d/)
       _, last_alias_version =