diff --git a/apps/netio.c b/apps/netio.c
index 66f875c5..39f24ef1 100644
--- a/apps/netio.c
+++ b/apps/netio.c
@@ -293,7 +293,7 @@ int TCP_Bench(void)
 {
 	char *cBuffer;
 	CONTROL ctl;
-	long long nData;
+	uint64_t nData;
 	int i;
 	struct sockaddr_in sa_server;
 	int server;