diff --git a/lib/tasks/transcribe.js b/lib/tasks/transcribe.js
index f9c8d399..fbb1b780 100644
--- a/lib/tasks/transcribe.js
+++ b/lib/tasks/transcribe.js
@@ -302,7 +302,7 @@ class TaskTranscribe extends Task {
       const b3 = this.getTracingPropagation();
       const httpHeaders = b3 && {b3};
       this.cs.requestor.request('verb:hook', this.transcriptionHook,
-        Object.assign({speech: evt}, this.cs.callInfo), httpHeaders)
+        Object.assign({speech: evt}, this.cs.callInfo.toJSON()), httpHeaders)
         .catch((err) => this.logger.info(err, 'TranscribeTask:_onTranscription error'));
     }
     if (this.parentTask) {