diff --git a/openbsc/src/libmsc/vty_interface_layer3.c b/openbsc/src/libmsc/vty_interface_layer3.c
index 8d6109b..503bee4 100644
--- a/openbsc/src/libmsc/vty_interface_layer3.c
+++ b/openbsc/src/libmsc/vty_interface_layer3.c
@@ -142,7 +142,7 @@
 }
 
 static int _send_sms_str(struct gsm_subscriber *receiver, char *str,
-			 u_int8_t tp_pid)
+			 uint8_t tp_pid)
 {
 	struct gsm_sms *sms;