diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c b/drivers/net/wireless/ath/wil6210/debugfs.c
index fbe27a34e1462367a6b7bfc3a2637d542db32577..3830cc20d4fa525f87a9c72f3391c8ce76501a9b 100644
--- a/drivers/net/wireless/ath/wil6210/debugfs.c
+++ b/drivers/net/wireless/ath/wil6210/debugfs.c
@@ -626,7 +626,7 @@ static ssize_t wil_write_back(struct file *file, const char __user *buf,
 	struct wil6210_priv *wil = file->private_data;
 	int rc;
 	char *kbuf = kmalloc(len + 1, GFP_KERNEL);
-	char cmd[8];
+	char cmd[9];
 	int p1, p2, p3;
 
 	if (!kbuf)