diff --git a/drivers/net/wireless/hostap/hostap_main.c b/drivers/net/wireless/hostap/hostap_main.c
index eaee84b55887b7306491151b2cd0db163158dfb1..25a2722c8a986ce35a8a37a9076814095cc70ee3 100644
--- a/drivers/net/wireless/hostap/hostap_main.c
+++ b/drivers/net/wireless/hostap/hostap_main.c
@@ -186,7 +186,7 @@ int prism2_wds_add(local_info_t *local, u8 *remote_addr,
 		return -ENOBUFS;
 
 	/* verify that there is room for wds# postfix in the interface name */
-	if (strlen(local->dev->name) > IFNAMSIZ - 5) {
+	if (strlen(local->dev->name) >= IFNAMSIZ - 5) {
 		printk(KERN_DEBUG "'%s' too long base device name\n",
 		       local->dev->name);
 		return -EINVAL;