diff --git a/conf.d/disk.yaml b/conf.d/disk.yaml
index 97ce789e..cc0f9f9d 100644
--- a/conf.d/disk.yaml
+++ b/conf.d/disk.yaml
@@ -21,4 +21,4 @@ instances:
       # device_blacklist_re: .*\/dev\/mapper\/lxc-box.*
 
       # For disk metrics it is also possible to ignore entire filesystem types
-      ignore_filesystem_types: cgroup,configfs,debugfs,devpts,devtmpfs,fusectl,hugetlbfs,proc,pstore,rpc_pipefs,securityfs,sysfs,tmpfs,udevfs
+      ignore_filesystem_types: cgroup,configfs,debugfs,devpts,devtmpfs,fusectl,hugetlbfs,proc,pstore,rpc_pipefs,securityfs,sysfs,tmpfs,udevfs,iso9660