diff --git a/src/avr/usbserial.c b/src/avr/usbserial.c
index 188a1b14..6ee60841 100644
--- a/src/avr/usbserial.c
+++ b/src/avr/usbserial.c
@@ -241,10 +241,3 @@ ISR(USB_COM_vect)
     }
     UENUM = old_uenum;
 }
-
-void
-usbserial_shutdown(void)
-{
-    UEIENX = 1<<RXSTPE;
-}
-DECL_SHUTDOWN(usbserial_shutdown);