diff --git a/sipffer.c b/sipffer.c
index e90a4c5..1a74d23 100644
--- a/sipffer.c
+++ b/sipffer.c
@@ -180,8 +180,8 @@ void getSIPPacket(u_char *data, const struct pcap_pkthdr *h, const u_char *p) {
 		if (strncmp((char *)packet + 8, response, 3)) return;
 	}
 	if (strlen(regexp) > 0) {
-		if ((strlen(header) > 0) && !rx_match(getSIPHeader(packet, header))) return;
-		if (!rx_match((char *)packet)) return;
+		if ((strlen(header) > 0) && !rpmatch(getSIPHeader(packet, header))) return;
+		if (!rpmatch((char *)packet)) return;
 	}
 	if (follow) {
 		if (follow == 1) {
@@ -212,6 +212,7 @@ void getSIPPacket(u_char *data, const struct pcap_pkthdr *h, const u_char *p) {
 
 	printf("\x1b[0;37m<==[%d bytes]==[%s] : %d.%d.%d.%d => ", caplen, getTime(h->ts), srcip[0], srcip[1], srcip[2], srcip[3]);
 	printf("%d.%d.%d.%d ====\n\x1b[1;%dm%s\n\x1b[0;37m=================>\n\n\x1b[0m", dstip[0], dstip[1], dstip[2], dstip[3], color, packet);
+	fflush(stdout);
 }
 
 /*