diff --git a/src/Client.js b/src/Client.js
index 15727c8efb..5c12fd9eb5 100644
--- a/src/Client.js
+++ b/src/Client.js
@@ -723,10 +723,12 @@ class Client extends EventEmitter {
                     /** @type {GroupNotification} object does not provide enough information about this event, so a @type {Message} object is used. */
                     const message = new Message(this, msg);
 
-                    const newId = isParticipant ? msg.recipients[0] : msg.to;
+                    const newId = isParticipant
+                        ? msg.recipients[0]
+                        : msg._data.templateParams[1];
                     const oldId = isParticipant
                         ? msg.author
-                        : msg.templateParams.find((id) => id !== newId);
+                        : msg._data.templateParams[0];
 
                     /**
                      * Emitted when a contact or a group participant changes their phone number.