diff --git a/server/plugin/plg_backend_nop/index.go b/server/plugin/plg_backend_nop/index.go
index b3145b30..19dc9b1e 100644
--- a/server/plugin/plg_backend_nop/index.go
+++ b/server/plugin/plg_backend_nop/index.go
@@ -39,7 +39,7 @@ type BlackHole struct{}
 
 func (this BlackHole) Init(params map[string]string, app *App) (IBackend, error) {
 	Log.Debug("plg_backend_nop::init params[%s]", params)
-	return BlackHole{}, nil
+	return &BlackHole{}, nil
 }
 
 func (this BlackHole) LoginForm() Form {