diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 4917b4e79bb522f6222e312aae7ff5c5f06e6d80..c6bb88d5effdc84ead3cb3837f8d656c097e1b7c 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -38,8 +38,6 @@
 
 static bool debug;
 
-#define PL2303_CLOSING_WAIT	(30*HZ)
-
 static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) },
 	{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) },