diff --git a/rtp.c b/rtp.c
index a4061779ab..5015c47507 100755
--- a/rtp.c
+++ b/rtp.c
@@ -919,8 +919,8 @@ int ast_rtp_senddigit(struct ast_rtp *rtp, char digit)
 		if (x ==0) {
 			/* Clear marker bit and increment seqno */
 			rtpheader[0] = htonl((2 << 30)  | (101 << 16) | (rtp->seqno++));
-			/* Make duration 240 */
-			rtpheader[3] |= htonl((240));
+			/* Make duration 800 (100ms) */
+			rtpheader[3] |= htonl((800));
 			/* Set the End bit for the last 3 */
 			rtpheader[3] |= htonl((1 << 23));
 		}