@@ -260,7 +260,7 @@ func (b *Builder) Build(ctx context.Context, opt backend.BuildConfig) (*builder.

 			}

 			auxJSON := new(json.RawMessage)

 			*auxJSON = auxJSONBytes

-			msgJSON, err := json.Marshal(&jsonmessage.JSONMessage{ID: "buildkit-trace", Aux: auxJSON})

+			msgJSON, err := json.Marshal(&jsonmessage.JSONMessage{ID: "moby.buildkit.trace", Aux: auxJSON})

 			if err != nil {

 				return err

 			}