diff --git a/Library/Homebrew/cmd/audit.rb b/Library/Homebrew/cmd/audit.rb
index 220ccaa8196a2c6cba944033df1924b9fc18351b..a3ccf369ea72da2f125ef5c8b8d72128388fc46d 100644
--- a/Library/Homebrew/cmd/audit.rb
+++ b/Library/Homebrew/cmd/audit.rb
@@ -133,6 +133,10 @@ class FormulaAuditor
     if formula.class < GithubGistFormula
       problem "GithubGistFormula is deprecated, use Formula instead"
     end
+
+    if formula.class < AmazonWebServicesFormula
+      problem "AmazonWebServicesFormula is deprecated, use Formula instead"
+    end
   end
 
   @@aliases ||= Formula.aliases