diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index df843d4a7d0f8680da0ff1c5705df4ef73d9579a..dd918de59609eae9e21a05609b9b1c10f85bec02 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -9189,8 +9189,6 @@ static enum sip_result add_sdp(struct sip_request *resp, struct sip_pvt *p, int
  		ast_str_append(&m_video, 0, "\r\n");
  	if (needtext)
  		ast_str_append(&m_text, 0, "\r\n");
-	if (add_t38)
-		ast_str_append(&m_modem, 0, "\r\n");
 
  	len = strlen(version) + strlen(subject) + strlen(owner) +
 		strlen(connection) + strlen(session_time);