diff --git a/files/etc/bup-excludes b/files/etc/bup-excludes
index bfd1489..5f34b2f 100644
--- a/files/etc/bup-excludes
+++ b/files/etc/bup-excludes
@@ -15,3 +15,4 @@
 /etc/puppet/hieradata/*
 /var/cache/*
 /var/lib/puppet/reports/*
+/opt/system-config/*