diff --git a/arch/xtensa/platform-iss/network.c b/arch/xtensa/platform-iss/network.c
index ab05bff40104c80ac2849131b57213a9aa898b5a..4bfe333be22943558a8448679b71f4bcd2b273e8 100644
--- a/arch/xtensa/platform-iss/network.c
+++ b/arch/xtensa/platform-iss/network.c
@@ -251,7 +251,7 @@ static int tuntap_open(struct iss_net_private *lp)
 
 	memset(&ifr, 0, sizeof ifr);
 	ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
-	strlcpy(ifr.ifr_name, dev_name, sizeof ifr.ifr_name - 1);
+	strlcpy(ifr.ifr_name, dev_name, sizeof ifr.ifr_name);
 
 	if ((err = simc_ioctl(fd, TUNSETIFF, (void*) &ifr)) < 0) {
 		printk("Failed to set interface, returned %d "