diff --git a/lib/brcobranca/retorno/cnab400/base.rb b/lib/brcobranca/retorno/cnab400/base.rb
index fabbeef1..f30aba05 100644
--- a/lib/brcobranca/retorno/cnab400/base.rb
+++ b/lib/brcobranca/retorno/cnab400/base.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
-
+require 'active_support/core_ext/object/blank'
 require 'parseline'
 
 module Brcobranca