diff --git a/Library/Homebrew/formula_auditor.rb b/Library/Homebrew/formula_auditor.rb
index e4ff85db0b..5a69bc751c 100644
--- a/Library/Homebrew/formula_auditor.rb
+++ b/Library/Homebrew/formula_auditor.rb
@@ -120,11 +120,13 @@ module Homebrew
     end
 
     def audit_formula_name
+      name = formula.name
+
+      problem "Formula name '#{name}' must not contain uppercase letters." if name != name.downcase
+
       return unless @strict
       return unless @core_tap
 
-      name = formula.name
-
       problem "'#{name}' is not allowed in homebrew/core." if MissingFormula.disallowed_reason(name)
 
       if Formula.aliases.include? name