make guides example more friendly to nonlatin langs

1 files changed, 1 insertions, 1 deletions

diff --git a/guides/source/active_record_validations.md b/guides/source/active_record_validations.md
index cba4b852a1..332af44e79 100644
--- a/guides/source/active_record_validations.md
+++ b/guides/source/active_record_validations.md
@@ -706,7 +706,7 @@ we don't want names and surnames to begin with lower case.
 ```ruby
 class Person < ActiveRecord::Base
   validates_each :name, :surname do |record, attr, value|
-    record.errors.add(attr, 'must start with upper case') if value =~ /\A[a-z]/
+    record.errors.add(attr, 'must start with upper case') if value =~ /\A[[:alpha:]]/
   end
 end
 ```