diff --git a/lib/utils/ws-requestor.js b/lib/utils/ws-requestor.js
index 816599c7..d0f49d84 100644
--- a/lib/utils/ws-requestor.js
+++ b/lib/utils/ws-requestor.js
@@ -144,7 +144,7 @@ class WsRequestor extends BaseRequestor {
     return new Promise((resolve, reject) => {
       /* give the far end a reasonable amount of time to ack our message */
       const timer = setTimeout(() => {
-        const {failure} = this.messagesInFlight.get(msgid);
+        const {failure} = this.messagesInFlight.get(msgid) || {};
         failure && failure(`timeout from far end for msgid ${msgid}`);
         this.messagesInFlight.delete(msgid);
       }, RESPONSE_TIMEOUT_MS);