diff --git a/common/techprofile/tech_profile.go b/common/techprofile/tech_profile.go
index 2a256e9..9f7bebf 100644
--- a/common/techprofile/tech_profile.go
+++ b/common/techprofile/tech_profile.go
@@ -122,7 +122,7 @@
 const MAX_GEM_PAYLOAD = "max_gem_payload_size"
 
 type InstanceControl struct {
-	Onu               string `json:ONU"`
+	Onu               string `json:"ONU"`
 	Uni               string `json:"uni"`
 	MaxGemPayloadSize string `json:"max_gem_payload_size"`
 }