diff --git a/src/types/usb_device.rs b/src/types/usb_device.rs
index 9881ef6..1464b0c 100644
--- a/src/types/usb_device.rs
+++ b/src/types/usb_device.rs
@@ -1,6 +1,9 @@
 use core::cell::Cell;
 
 use avr_device::{
+    atmega32u4::usb_device::{
+        udint::W as UDINTWriter, ueintx::W as UEINTXWriter, usbint::W as USBINTWriter,
+    },
     atmega32u4::{PLL, USB_DEVICE},
     interrupt::{CriticalSection, Mutex},
 };