diff --git a/doc/go_spec.html b/doc/go_spec.html
index 0fd50534172..2f04de419d8 100644
--- a/doc/go_spec.html
+++ b/doc/go_spec.html
@@ -1418,7 +1418,7 @@ Zero value:
 	nil
 
 Functions:
-	cap close closed len make new panic panicln print println
+	cap close closed copy len make new panic panicln print println
 </pre>