diff --git a/kontoapi-rails.gemspec b/kontoapi-rails.gemspec
index 161c689..1366f4f 100644
--- a/kontoapi-rails.gemspec
+++ b/kontoapi-rails.gemspec
@@ -26,6 +26,7 @@ Gem::Specification.new do |s|
     "Rakefile",
     "VERSION",
     "init.rb",
+    "kontoapi-rails.gemspec",
     "lib/kontoapi-rails.rb",
     "lib/kontoapi-rails/config.rb",
     "lib/kontoapi-rails/orm/active_record_extension.rb",
diff --git a/lib/kontoapi-rails/orm/mongoid_extension.rb b/lib/kontoapi-rails/orm/mongoid_extension.rb
index e69de29..262ddfb 100644
--- a/lib/kontoapi-rails/orm/mongoid_extension.rb
+++ b/lib/kontoapi-rails/orm/mongoid_extension.rb
@@ -0,0 +1 @@
+# not implemented yet
\ No newline at end of file
diff --git a/lib/kontoapi-rails/validators/bank_account_validator.rb b/lib/kontoapi-rails/validators/bank_account_validator.rb
index f25227b..03c4508 100644
--- a/lib/kontoapi-rails/validators/bank_account_validator.rb
+++ b/lib/kontoapi-rails/validators/bank_account_validator.rb
@@ -14,11 +14,11 @@ def validate(record)
       record_options  = options.reverse_merge(DEFAULTS)
       account_number  = record.send(:"#{record_options[:account_number_field]}")
       bank_code       = record.send(:"#{record_options[:bank_code_field]}")
-      record.errors[:"#{record_options[:account_number_field]}"] << :invalid  unless KontoAPI::valid?(account_number, bank_code)
+      record.errors.add(:"#{record_options[:account_number_field]}", :invalid) unless KontoAPI::valid?(account_number, bank_code)
     rescue Timeout::Error => ex
       case record_options[:on_timeout]
       when :fail
-        record.errors[:"#{record_options[:account_number_field]}"] << :timeout
+        record.errors.add(:"#{record_options[:account_number_field]}", :timeout)
       when :ignore
         # nop
       when :retry