diff --git a/src/read_tcpip.cc b/src/read_tcpip.cc
index 5f588825..08c7b0b6 100644
--- a/src/read_tcpip.cc
+++ b/src/read_tcpip.cc
@@ -37,6 +37,7 @@
 #include <unistd.h>
 #include <netinet/in.h>
 #include <sys/time.h>
+#include <cinttypes>
 
 struct read_tcpip_data {
 	char *host;
@@ -75,7 +76,7 @@ void parse_tcp_ping_arg(struct text_object *obj, const char *arg, void *free_at_
 	obj->data.opaque = addr;
 	memset(addr, 0, sizeof(struct sockaddr_in));
 	hostname = (char *) malloc(strlen(arg)+1);
-	switch( sscanf(arg, "%s %u", hostname, (unsigned int*) &(addr->sin_port)) ) {
+	switch( sscanf(arg, "%s %"SCNu16, hostname, &(addr->sin_port)) ) {
 	case 1:
 		addr->sin_port = DEFAULT_TCP_PING_PORT;
 		break;