diff --git a/csug/numeric.stex b/csug/numeric.stex
index a3a6242400..453b2702e2 100644
--- a/csug/numeric.stex
+++ b/csug/numeric.stex
@@ -117,7 +117,7 @@ Section~\ref{SECTNUMERICMISC}.
 The Revised$^6$ Report distinguishes two types of special numeric objects:
 fixnums and flonums.
 {\ChezScheme} additionally distinguishes \emph{bignums} (exact integers outside
-of the bignum range) and \emph{ratnums} (ratios of exact integers).
+of the fixnum range) and \emph{ratnums} (ratios of exact integers).
 It also provides a predicate for recognizing \emph{cflonums}, which are
 flonums or inexact complex numbers.