diff --git a/doc/effective_go.html b/doc/effective_go.html
index be9b8aef9c..9be6bc7cb0 100644
--- a/doc/effective_go.html
+++ b/doc/effective_go.html
@@ -2695,8 +2695,7 @@ type ReadWriter interface {
 <p>
 This says just what it looks like: A <code>ReadWriter</code> can do
 what a <code>Reader</code> does <em>and</em> what a <code>Writer</code>
-does; it is a union of the embedded interfaces (which must be disjoint
-sets of methods).
+does; it is a union of the embedded interfaces.
 Only interfaces can be embedded within interfaces.
 </p>
 <p>