diff --git a/pkg/setting/setting.go b/pkg/setting/setting.go
index d91a9c82a22..50cecb688bb 100644
--- a/pkg/setting/setting.go
+++ b/pkg/setting/setting.go
@@ -78,6 +78,8 @@ var (
 )
 
 // TODO move all global vars to this struct
+// Deprecated: Direct access to Cfg will be disallowed in a future release.
+// Use the ConfigProvider interface (see pkg/configprovider/configprovider.go) instead.
 type Cfg struct {
 	Target []string
 	Raw    *ini.File