diff --git a/drivers/usb/gadget/f_fastboot.c b/drivers/usb/gadget/f_fastboot.c
index fd9fc8a..751ec9e 100644
--- a/drivers/usb/gadget/f_fastboot.c
+++ b/drivers/usb/gadget/f_fastboot.c
@@ -137,6 +137,7 @@
 	int id;
 	struct usb_gadget *gadget = c->cdev->gadget;
 	struct f_fastboot *f_fb = func_to_fastboot(f);
+	const char *s;
 
 	/* DYNAMIC interface numbers assignments */
 	id = usb_interface_id(c, f);
@@ -162,6 +163,10 @@
 
 	hs_ep_out.bEndpointAddress = fs_ep_out.bEndpointAddress;
 
+	s = getenv("serial#");
+	if (s)
+		g_dnl_set_serialnumber((char *)s);
+
 	return 0;
 }