diff --git a/lib/call-session.js b/lib/call-session.js
index 7df0b2d..865a1ad 100644
--- a/lib/call-session.js
+++ b/lib/call-session.js
@@ -327,8 +327,8 @@ class CallSession extends Emitter {
               '-X-Requested-Carrier-Sid',
               '-X-Jambonz-Routing',
               '-X-Jambonz-FS-UUID',
-              '-X-Preferred-User',
-              '-X-Preferred-Host',
+              '-X-Preferred-From-User',
+              'X-Preferred-From-Host',
               '-X-Jambonz-FS-UUID',
             ],
             proxyResponseHeaders: [