diff --git a/lispref/intro.texi b/lispref/intro.texi
index 7e658d235e7..4a00377db4f 100644
--- a/lispref/intro.texi
+++ b/lispref/intro.texi
@@ -86,6 +86,8 @@ variable name, as appropriate.  Also state the number of the edition
 you are criticizing.
 @end ifnottex
 
+@cindex bugs
+@cindex suggestions
 Please mail comments and corrections to
 
 @example