diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 2009dc4d25..54744da7d4 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -866,8 +866,10 @@ static int tun_ifup(FAR struct net_driver_s *dev)
 
 #ifdef CONFIG_NET_IPv4
   ninfo("Bringing up: %d.%d.%d.%d\n",
-        dev->d_ipaddr & 0xff, (dev->d_ipaddr >> 8) & 0xff,
-        (dev->d_ipaddr >> 16) & 0xff, dev->d_ipaddr >> 24);
+        (int)(dev->d_ipaddr & 0xff),
+        (int)((dev->d_ipaddr >> 8) & 0xff),
+        (int)((dev->d_ipaddr >> 16) & 0xff),
+        (int)(dev->d_ipaddr >> 24));
 #endif
 #ifdef CONFIG_NET_IPv6
   ninfo("Bringing up: %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",