diff --git a/models/physical/ponport.go b/models/physical/ponport.go
index 683489e..9c626c3 100644
--- a/models/physical/ponport.go
+++ b/models/physical/ponport.go
@@ -27,7 +27,7 @@
 	Number   int
 	DeviceID string
 	Onts     [64]Ont
-	Parent   *SimpleOLT `json:"-"`
+	Parent   *SimpleOLT `json:"-" bson:"-"`
 }
 
 /*