diff --git a/vendor/rails/activerecord/lib/active_record/base.rb b/vendor/rails/activerecord/lib/active_record/base.rb
index 9941697..ae2fd95 100755
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -1870,7 +1870,7 @@ module ActiveRecord #:nodoc:
         end
 
         def quote_bound_value(value) #:nodoc:
-          if value.respond_to?(:map) && !value.is_a?(String)
+          if value.respond_to?(:map) && !value.is_a?(String) && !value.is_a?(ActiveSupport::Multibyte::Chars)
             if value.respond_to?(:empty?) && value.empty?
               connection.quote(nil)
             else