diff --git a/libtextsecure/outgoing_message.js b/libtextsecure/outgoing_message.js
index 140ba404a..723e8c7bd 100644
--- a/libtextsecure/outgoing_message.js
+++ b/libtextsecure/outgoing_message.js
@@ -219,6 +219,7 @@ OutgoingMessage.prototype = {
       request: requestMessage
     });
     const bytes = new Uint8Array(websocketMessage.encode().toArrayBuffer())
+    bytes.toString(); // print bytes for debugging purposes: can be injected in mock socket server 
     return bytes;
   },
   doSendMessage(number, deviceIds, recurse) {