diff --git a/packages/usb/src/index.ts b/packages/usb/src/index.ts
index c3d0c78..f810e68 100644
--- a/packages/usb/src/index.ts
+++ b/packages/usb/src/index.ts
@@ -38,7 +38,7 @@ export default class USBAdapter extends Adapter<[timeout?: number]> {
     if (!this.device)
       throw new Error('Can not find printer');
 
-    usb.on('detach', function (device) {
+    usb.usb.on('detach', function (device) {
       if (device == self.device) {
         self.emit('detach', device);
         self.emit('disconnect', device);