diff --git a/usb_util/src/libusb_device.rs b/usb_util/src/libusb_device.rs
index 395532717c..2a9ba868c5 100644
--- a/usb_util/src/libusb_device.rs
+++ b/usb_util/src/libusb_device.rs
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 use std;
+#[cfg(feature = "sandboxed-libusb")]
 use std::os::unix::io::RawFd;
 use std::sync::Arc;