diff --git a/gentooup.sh b/gentooup.sh
index 34c4b35..da83667 100755
--- a/gentooup.sh
+++ b/gentooup.sh
@@ -116,7 +116,16 @@ fi
 
 echo "***************** remove unneeded packages *******************"
 echo Started at "$STARTDATE"
+
+#make sure that current kernel sources are kept:
+CURRENTKERNELVERSION="$(uname -r)"
+emerge --no-replace gentoo-sources:"${CURRENTKERNELVERSION/"-gentoo"/}"
 emerge -a  "${PORTAGE_OPTIONS[@]}" --depclean
+if [[ "$(grep -c gentoo-sources /var/lib/portage/world)" gt 2 ]] ; then
+  echo too many kernelversion in world file!
+  grep gentoo-source /var/lib/portage/world
+fi
+
 
 if [[ -n "$(which restart_services)" ]] ; then
   restart_services -l