diff --git a/pkgs/racket-doc/scribblings/reference/reader.scrbl b/pkgs/racket-doc/scribblings/reference/reader.scrbl
index 6fe9b107f8..00c66f3493 100644
--- a/pkgs/racket-doc/scribblings/reference/reader.scrbl
+++ b/pkgs/racket-doc/scribblings/reference/reader.scrbl
@@ -760,15 +760,15 @@ one of the following forms:
 
 @itemize[
 
- @item{ @litchar{#\nul} or @litchar{#\null}: NUL (ASCII 0)@nonalpha[]}
- @item{ @litchar{#\backspace}: backspace  (ASCII 8)@nonalpha[]}
- @item{ @litchar{#\tab}: tab (ASCII 9)@nonalpha[]}
- @item{ @litchar{#\newline} or @litchar{#\linefeed}: linefeed (ASCII 10)@nonalpha[]}
- @item{ @litchar{#\vtab}: vertical tab (ASCII 11)@nonalpha[]}
- @item{ @litchar{#\page}: page break (ASCII 12)@nonalpha[]}
- @item{ @litchar{#\return}: carriage return (ASCII 13)@nonalpha[]}
- @item{ @litchar{#\space}: space (ASCII 32)@nonalpha[]}
- @item{ @litchar{#\rubout}: delete (ASCII 127)@nonalpha[]}
+ @item{ @as-index{@litchar{#\nul}} or @as-index{@litchar{#\null}}: NUL (ASCII 0)@nonalpha[]}
+ @item{ @as-index{@litchar{#\backspace}}: backspace  (ASCII 8)@nonalpha[]}
+ @item{ @as-index{@litchar{#\tab}}: tab (ASCII 9)@nonalpha[]}
+ @item{ @as-index{@litchar{#\newline}} or @as-index{@litchar{#\linefeed}}: linefeed (ASCII 10)@nonalpha[]}
+ @item{ @as-index{@litchar{#\vtab}}: vertical tab (ASCII 11)@nonalpha[]}
+ @item{ @as-index{@litchar{#\page}}: page break (ASCII 12)@nonalpha[]}
+ @item{ @as-index{@litchar{#\return}}: carriage return (ASCII 13)@nonalpha[]}
+ @item{ @as-index{@litchar{#\space}}: space (ASCII 32)@nonalpha[]}
+ @item{ @as-index{@litchar{#\rubout}}: delete (ASCII 127)@nonalpha[]}
 
  @item{@litchar{#\}@kleenerange[3 3]{@nonterm{digit@sub{8}}}:
        Unicode for the octal number specified by three octal digits---as in string escapes (see