diff --git a/book/book.tex b/book/book.tex
index 51718f1fb..d65cec188 100644
--- a/book/book.tex
+++ b/book/book.tex
@@ -862,7 +862,7 @@ \section{Importing the data}
 \end{verbatim}
 
 This dictionary describes two variables: {\tt caseid} is a 12-character
-string that represents the respondent ID; {\tt pregorder} is a 
+string that represents the respondent ID; {\tt pregordr} is a 
 one-byte integer that indicates which pregnancy this record
 describes for this respondent.