diff --git a/overviews/core/_posts/2012-11-03-value-classes.md b/overviews/core/_posts/2012-11-03-value-classes.md
index 22a02158e9..0b615b037d 100644
--- a/overviews/core/_posts/2012-11-03-value-classes.md
+++ b/overviews/core/_posts/2012-11-03-value-classes.md
@@ -138,7 +138,7 @@ Full details on the implementation of value classes and their limitations may be
 
 A value class ...
 
-1. ... must have only a primary constructor with exactly one public, val parameter whose type is not a value class.
+1. ... must have only a primary constructor with exactly one public, val parameter whose type is not a value class. (From Scala 2.11.0, the parameter may be non-public.)
 2. ... may not have specialized type parameters.
 3. ... may not have nested or local classes, traits, or objects
 4. ... may not define a equals or hashCode method.