diff --git a/tools/release.sh b/tools/release.sh
index 6a8e3e28b..ace29ed50 100755
--- a/tools/release.sh
+++ b/tools/release.sh
@@ -44,7 +44,7 @@ umount $TMPTMPDISK
 umount $RAM
 
 ( cd .. && make clean )
-rm -rf $RELEASEDIR $ISO $IMAGE $ROOTIMAGE
+rm -rf $RELEASEDIR $ISO $IMAGE $ROOTIMAGE ${IMAGE}.z
 mkdir -p $RELEASEDIR
 mkfs -b 1440 -B 1024 $RAM || exit
 echo " * mounting $RAM as $RELEASEDIR"