diff --git a/plugins/inputs/disk/disk.go b/plugins/inputs/disk/disk.go
index 461f4bdc9..6c1f59997 100644
--- a/plugins/inputs/disk/disk.go
+++ b/plugins/inputs/disk/disk.go
@@ -12,8 +12,7 @@ import (
 type DiskStats struct {
 	ps system.PS
 
-	// Legacy support
-	LegacyMountPoints []string `toml:"mountpoints"`
+	LegacyMountPoints []string `toml:"mountpoints" deprecated:"0.10.2;2.0.0;use 'mount_points' instead"`
 
 	MountPoints []string `toml:"mount_points"`
 	IgnoreFS    []string `toml:"ignore_fs"`