diff --git a/kernel/common/marshal19.rb b/kernel/common/marshal19.rb
index e34e14c03b..562cbb8d46 100644
--- a/kernel/common/marshal19.rb
+++ b/kernel/common/marshal19.rb
@@ -29,11 +29,11 @@ def serialize_encoding?(obj)
     def serialize_encoding(obj)
       case enc = Rubinius::Type.object_encoding(obj)
         when Encoding::US_ASCII
-          serialize_symbol(:E) + false.__marshal__(self)
+          :E.__marshal__(self) + false.__marshal__(self)
         when Encoding::UTF_8
-          serialize_symbol(:E) + true.__marshal__(self)
+          :E.__marshal__(self) + true.__marshal__(self)
         else
-          serialize_symbol(:encoding) + serialize_string(enc.name)
+          :encoding.__marshal__(self) + serialize_string(enc.name)
       end
     end
   end