diff --git a/scripts/pkg.sh b/scripts/pkg.sh
index 13caba88..40b93326 100644
--- a/scripts/pkg.sh
+++ b/scripts/pkg.sh
@@ -204,8 +204,10 @@ check_pkg_install()
 		shift
 		[ ! -f "$1" ] && return 0
 	}
+	local sudo
+	[ "$UID" = 0 ] || sudo=/usr/bin/sudo
 	echo "+ installing $1"
-	sudo $RPM -U $1 || {
+	$sudo $RPM -U $1 || {
 		echo "failed to install $1"
 		return 1
 	}