diff --git a/scripts/chroot.sh b/scripts/chroot.sh
index 8f20cb6e9d243280681ab2b76573507c7d13e7c6..2466bff3747d2f47f0691cdd7972070d5174456b 100755
--- a/scripts/chroot.sh
+++ b/scripts/chroot.sh
@@ -107,14 +107,13 @@ check_defines () {
 		fi
 	fi
 
-	if [ ! "x${deb_additional_pkgs}" = "x" ] ; then
+	if [ "x${deb_additional_pkgs}" = "x" ] ; then
 		##Backwards compat pre configs
-		if [ "x${base_pkg_list}" = "x" ] ; then
+		if [ ! "x${base_pkg_list}" = "x" ] ; then
 			deb_additional_pkgs="$(echo ${base_pkg_list} | sed 's/,/ /g')"
 		fi
 	else
-		temp="$(echo ${deb_additional_pkgs} | sed 's/,/ /g')"
-		deb_additional_pkgs="${temp}"
+		deb_additional_pkgs="$(echo ${deb_additional_pkgs} | sed 's/,/ /g')"
 	fi
 }