diff --git a/collects/net/scribblings/uri-codec.scrbl b/collects/net/scribblings/uri-codec.scrbl
index 17a8da688c..6429b238f4 100644
--- a/collects/net/scribblings/uri-codec.scrbl
+++ b/collects/net/scribblings/uri-codec.scrbl
@@ -131,8 +131,9 @@ associations in @racket[form-urlencoded->alist],
 
 The default value is @racket['amp-or-semi], which means that both
 @litchar{&} and @litchar{;} are treated as separators when parsing,
-and @litchar{&} is used as a separator when encoding. The other modes
-use/recognize only of the separators.
+and @litchar{&} is used as a separator when encoding. The @racket['semi-or-amp]
+mode is similar, but @litchar{;} is used when encoding. The other modes
+use/recognize only one of the separators.
 
 @examples[
 #:eval uri-codec-eval