diff --git a/shittyserver.py b/shittyserver.py
index 882329f..da20fa1 100644
--- a/shittyserver.py
+++ b/shittyserver.py
@@ -274,6 +274,7 @@ class Session(object):
             await self.pc.setRemoteDescription(offer)
 
             answer = await self.pc.createAnswer()
+            answer.sdp += "\na=fmtp:111 minptime=10;useinbandfec=0;maxaveragebitrate=393216;stereo=1;sprop-stereo=1;cbr=1"
             await self.pc.setLocalDescription(answer)
 
             assert self.websocket is not None