diff --git a/files/etc/bup-excludes b/files/etc/bup-excludes
index 52db6f8..81665ce 100644
--- a/files/etc/bup-excludes
+++ b/files/etc/bup-excludes
@@ -16,3 +16,4 @@
 /etc/puppet/hieradata/*
 /var/cache/*
 /var/lib/puppet/reports/*
+/opt/system-config/*