1 files changed, 3 insertions, 3 deletions
diff --git a/activesupport/lib/active_support/multibyte/handlers/utf8_handler.rb b/activesupport/lib/active_support/multibyte/handlers/utf8_handler.rb
index c6ef6ad095..6c8eb88702 100644
--- a/activesupport/lib/active_support/multibyte/handlers/utf8_handler.rb
+++ b/activesupport/lib/active_support/multibyte/handlers/utf8_handler.rb
@@ -162,10 +162,10 @@ module ActiveSupport::Multibyte::Handlers
         elsif args[0].kind_of? Range
           cps = u_unpack(str).slice(*args)
           cps.nil? ? nil : cps.pack('U*')
-        elsif args[0].kind_of? Numeric
+        elsif args.size == 1 && args[0].kind_of?(Numeric)
           u_unpack(str)[args[0]]
         else
-          str.slice(*args)
+          u_unpack(str).slice(*args).pack('U*')
         end
       end
       alias_method :[], :slice
@@ -434,4 +434,4 @@ module ActiveSupport::Multibyte::Handlers
       UCD = UnicodeDatabase.new
     end
   end
-end
-\ No newline at end of file
+end