diff --git a/openbsc/src/libmsc/silent_call.c b/openbsc/src/libmsc/silent_call.c
index 83e27a9..9e9b72d 100644
--- a/openbsc/src/libmsc/silent_call.c
+++ b/openbsc/src/libmsc/silent_call.c
@@ -80,8 +80,8 @@
 }
 
 struct msg_match {
-	u_int8_t pdisc;
-	u_int8_t msg_type;
+	uint8_t pdisc;
+	uint8_t msg_type;
 };
 
 /* list of messages that are handled inside OpenBSC, even in a silent call */
@@ -94,7 +94,7 @@
 int silent_call_reroute(struct gsm_subscriber_connection *conn, struct msgb *msg)
 {
 	struct gsm48_hdr *gh = msgb_l3(msg);
-	u_int8_t pdisc = gh->proto_discr & 0x0f;
+	uint8_t pdisc = gh->proto_discr & 0x0f;
 	int i;
 
 	/* if we're not part of a silent call, never reroute */