diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index feafa85dd07ee9a2f7c9907f6d4115a0af6db0c6..9892626066849e8ddb3f4d465119aea98b2e1200 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1769,7 +1769,8 @@ static int ftdi_8u2232c_probe(struct usb_serial *serial)
 
 	dbg("%s", __func__);
 
-	if (strcmp(udev->manufacturer, "CALAO Systems") == 0)
+	if ((udev->manufacturer) &&
+	    (strcmp(udev->manufacturer, "CALAO Systems") == 0))
 		return ftdi_jtag_probe(serial);
 
 	return 0;