diff --git a/errata.html b/errata.html
index a29e066..3dcf365 100644
--- a/errata.html
+++ b/errata.html
@@ -134,6 +134,12 @@ pre {
     statement is a declaration; the other three are assignments.
     (Thanks to Yoshiki Shibata, 2015-11-09.  Corrected in the third printing.)
   </p>
+
+  <p>
+    <b>p.84, ¶2</b>: for "used as function parameters",
+    read "used as function parameters or results".
+    (Thanks to Yang Yang 杨玚, 2016-04-18.)
+  </p>
  
   <p>
     <b>p.112</b>: Exercise 4.11 calls for a "CRUD" (create, read, update,