1 files changed, 2 insertions, 2 deletions
diff --git a/activesupport/lib/active_support/multibyte/utils.rb b/activesupport/lib/active_support/multibyte/utils.rb
index a7e40688de..8e47763d39 100644
--- a/activesupport/lib/active_support/multibyte/utils.rb
+++ b/activesupport/lib/active_support/multibyte/utils.rb
@@ -5,7 +5,7 @@ module ActiveSupport #:nodoc:
     if Kernel.const_defined?(:Encoding)
       # Returns a regular expression that matches valid characters in the current encoding
       def self.valid_character
-        VALID_CHARACTER[Encoding.default_internal.to_s]
+        VALID_CHARACTER[Encoding.default_external.to_s]
       end
     else
       def self.valid_character
@@ -58,4 +58,4 @@ module ActiveSupport #:nodoc:
       end
     end
   end
-end
-\ No newline at end of file
+end