diff --git a/openbsc/src/mgcp/mgcp_protocol.c b/openbsc/src/mgcp/mgcp_protocol.c
index 211ec3e..ba0ae8d 100644
--- a/openbsc/src/mgcp/mgcp_protocol.c
+++ b/openbsc/src/mgcp/mgcp_protocol.c
@@ -427,10 +427,10 @@
 	memset(&endp->net_end.addr, 0, sizeof(endp->net_end.addr));
 
 	/* bind to the port now */
-	port = rtp_calculate_port(ENDPOINT_NUMBER(endp), cfg->rtp_bts_base_port);
+	port = rtp_calculate_port(ENDPOINT_NUMBER(endp), cfg->bts_ports.base_port);
 	endp->bts_end.local_port = port;
 
-	port = rtp_calculate_port(ENDPOINT_NUMBER(endp), cfg->rtp_net_base_port);
+	port = rtp_calculate_port(ENDPOINT_NUMBER(endp), cfg->net_ports.base_port);
 	endp->net_end.local_port = port;
 
 	/* assign a local call identifier or fail */
@@ -710,8 +710,9 @@
 	cfg->source_addr = talloc_strdup(cfg, "0.0.0.0");
 	cfg->audio_name = talloc_strdup(cfg, "GSM-EFR/8000");
 	cfg->audio_payload = 97;
-	cfg->rtp_bts_base_port = RTP_PORT_DEFAULT;
-	cfg->rtp_net_base_port = RTP_PORT_NET_DEFAULT;
+
+	cfg->bts_ports.base_port = RTP_PORT_DEFAULT;
+	cfg->net_ports.base_port = RTP_PORT_NET_DEFAULT;
 
 	return cfg;
 }