Issue #13575: there is only one class type.
diff --git a/Lib/pickle.py b/Lib/pickle.py
index a911ca0..ca36274 100644
--- a/Lib/pickle.py
+++ b/Lib/pickle.py
@@ -375,7 +375,7 @@
             # allowing protocol 0 and 1 to work normally.  For this to
             # work, the function returned by __reduce__ should be
             # called __newobj__, and its first argument should be a
-            # new-style class.  The implementation for __newobj__
+            # class.  The implementation for __newobj__
             # should be as follows, although pickle has no way to
             # verify this:
             #