diff --git a/lib/session/call-session.js b/lib/session/call-session.js
index e49505a42..ba01b0eb2 100644
--- a/lib/session/call-session.js
+++ b/lib/session/call-session.js
@@ -13,7 +13,7 @@ const moment = require('moment');
 const assert = require('assert');
 const sessionTracker = require('./session-tracker');
 const makeTask = require('../tasks/make_task');
-const { normalizeJambones, validate } = require('@jambonz/verb-specifications');
+const { normalizeJambones } = require('@jambonz/verb-specifications');
 const listTaskNames = require('../utils/summarize-tasks');
 const HttpRequestor = require('../utils/http-requestor');
 const WsRequestor = require('../utils/ws-requestor');