diff --git a/tx0/message/message_event_response.go b/tx0/message/message_event_response.go
index 69b3e6a..d9a0e3c 100644
--- a/tx0/message/message_event_response.go
+++ b/tx0/message/message_event_response.go
@@ -15,11 +15,11 @@ type MessageEventResponse struct {
 	UserId                  uuid.UUID   `json:"user_id,omitempty"`
 	ContactId               *uuid.UUID  `json:"contact_id,omitempty"`
 	MessageId               *uuid.UUID  `json:"message_id,omitempty"`
-	Status                  *string     `json:"status"`
+	Status                  string     `json:"status"`
 	Sent                    time.Time   `json:"sent"`
 }
 
 const (
-	Message_Event_Response_Status_Instant   = "Instant"
-	Message_Event_Response_Status_Scheduled = "Scheduled"
+	Message_Event_Response_Status_Instant   = "INSTANT"
+	Message_Event_Response_Status_Scheduled = "SCHEDULED"
 )