diff --git a/lib/RTCSession.js b/lib/RTCSession.js
index fc0cad78e..26d233ffe 100644
--- a/lib/RTCSession.js
+++ b/lib/RTCSession.js
@@ -2371,7 +2371,7 @@ module.exports = class RTCSession extends EventEmitter
         notifier.notify(response.status_code, response.reason_phrase);
       });
 
-      session.on('failed', ({ message, cause }) =>
+      session.on('_failed', ({ message, cause }) =>
       {
         if (message)
         {
@@ -3438,6 +3438,15 @@ module.exports = class RTCSession extends EventEmitter
   {
     debug('session failed');
 
+    // Emit private '_failed' event first.
+    debug('emit "_failed"');
+
+    this.emit('_failed', {
+      originator,
+      message : message || null,
+      cause
+    });
+
     this._close();
 
     debug('emit "failed"');