diff --git a/lib/util-iso.sh b/lib/util-iso.sh
index f3d9981..310378f 100644
--- a/lib/util-iso.sh
+++ b/lib/util-iso.sh
@@ -611,7 +611,7 @@ compress_images(){
 	make_checksum "${iso_file}"
 	${sign} && sign_iso "${iso_file}"
 	${torrent} && make_torrent
-	chown -R "${OWNER}:${OWNER}" "${iso_dir}"
+	chown -R "${OWNER}:$(id --group ${OWNER})" "${iso_dir}"
 	show_elapsed_time "${FUNCNAME}" "${timer}"
 }
 
diff --git a/lib/util-pkg.sh b/lib/util-pkg.sh
index 0feb090..679568e 100644
--- a/lib/util-pkg.sh
+++ b/lib/util-pkg.sh
@@ -250,7 +250,7 @@ move_to_cache(){
 	mv $src ${pkg_dir}/
 	${sign} && sign_pkg "${src##*/}"
 	[[ -n $PKGDEST ]] && rm "$1"
-	chown -R "${OWNER}:${OWNER}" "${pkg_dir}"
+	chown -R "${OWNER}:$(id --group ${OWNER})" "${pkg_dir}"
 }
 
 archive_logs(){