diff --git a/plugins/inputs/disk/README.md b/plugins/inputs/disk/README.md
index 2979a5f2e..b0a8ac05a 100644
--- a/plugins/inputs/disk/README.md
+++ b/plugins/inputs/disk/README.md
@@ -15,7 +15,7 @@ https://en.wikipedia.org/wiki/Df_(Unix) for more details.
   # mount_points = ["/"]
 
   ## Ignore mount points by filesystem type.
-  ignore_fs = ["tmpfs", "devtmpfs", "devfs", "overlay", "aufs", "squashfs"]
+  ignore_fs = ["tmpfs", "devtmpfs", "devfs", "iso9660", "overlay", "aufs", "squashfs"]
 ```
 
 #### Docker container
diff --git a/plugins/inputs/disk/disk.go b/plugins/inputs/disk/disk.go
index 5a30dbecf..86aefc60f 100644
--- a/plugins/inputs/disk/disk.go
+++ b/plugins/inputs/disk/disk.go
@@ -29,7 +29,7 @@ var diskSampleConfig = `
   # mount_points = ["/"]
 
   ## Ignore mount points by filesystem type.
-  ignore_fs = ["tmpfs", "devtmpfs", "devfs", "overlay", "aufs", "squashfs"]
+  ignore_fs = ["tmpfs", "devtmpfs", "devfs", "iso9660", "overlay", "aufs", "squashfs"]
 `
 
 func (_ *DiskStats) SampleConfig() string {