diff --git a/pdfbook b/pdfbook
index a87c0b446a9e49476d1ebc051249cfaf5320b753..b49d143a1c93ded65943fae86583190a9403d977 100755
--- a/pdfbook
+++ b/pdfbook
@@ -38,12 +38,12 @@ fi
 ##
 if test -z "$shortedge"
 then 
-    exec pdfjam --landscape --suffix book $signature "$@"
+    exec pdfjam --booklet true --landscape --suffix book $signature "$@"
 else
     (kpsewhich everyshi.sty >/dev/null) || {
 	echo "the 'everyshi' package is not installed."; exit 1
     }
-    exec pdfjam --landscape --suffix book $signature \
+    exec pdfjam --booklet true --landscape --suffix book $signature \
 	--preamble '\usepackage{everyshi}
 \makeatletter
 \EveryShipout{\ifodd\c@page\pdfpageattr{/Rotate 180}\fi}