diff --git a/rtcllm/rtc.py b/rtcllm/rtc.py
index 8f633df..539fcb2 100644
--- a/rtcllm/rtc.py
+++ b/rtcllm/rtc.py
@@ -164,7 +164,7 @@ class RTCLLM:
 		await pc.setLocalDescription(offer)
 		await self.ws_send(json.dumps({
 			'type':'offer', 
-			'offer': {'type':pc.localDescription.type, 'sdp':pc.localDescription.dsp},
+			'offer': {'type':pc.localDescription.type, 'sdp':pc.localDescription.sdp},
 			'to':data['from']
 		}))