diff --git a/src/switch_rtp.c b/src/switch_rtp.c
index 6deb482c99..2bf5465646 100644
--- a/src/switch_rtp.c
+++ b/src/switch_rtp.c
@@ -1500,7 +1500,7 @@ static int rtp_common_read(switch_rtp_t *rtp_session, switch_payload_t *payload_
 			}
 
 			poll_loop = 1;
-			rtp_session->missed_count += (poll_sec * 1000 ) / (rtp_session->ms_per_packet / 1000);
+			rtp_session->missed_count += (poll_sec * 1000 ) / (rtp_session->ms_per_packet ? rtp_session->ms_per_packet : 20 / 1000);
 			bytes = 0;
 		}