diff --git a/usb/fakelibusb_test.go b/usb/fakelibusb_test.go
index 4a244c5..ca025bc 100644
--- a/usb/fakelibusb_test.go
+++ b/usb/fakelibusb_test.go
@@ -259,19 +259,18 @@ func (f *fakeLibusb) setAlt(d *libusbDevHandle, intf, alt uint8) error {
 	return nil
 }
 
-func (f *fakeLibusb) alloc(_ *libusbDevHandle, _ *EndpointInfo, _ time.Duration, _ int, buf []byte) (*libusbTransfer, error) {
+func (f *fakeLibusb) alloc(_ *libusbDevHandle, _ *EndpointInfo, _ time.Duration, _ int, buf []byte, done chan struct{}) (*libusbTransfer, error) {
 	f.mu.Lock()
 	defer f.mu.Unlock()
 	t := new(libusbTransfer)
-	f.ts[t] = &fakeTransfer{buf: buf}
+	f.ts[t] = &fakeTransfer{buf: buf, done: done}
 	return t, nil
 }
 func (f *fakeLibusb) cancel(t *libusbTransfer) error { return errors.New("not implemented") }
-func (f *fakeLibusb) submit(t *libusbTransfer, done chan struct{}) error {
+func (f *fakeLibusb) submit(t *libusbTransfer) error {
 	f.mu.Lock()
 	ft := f.ts[t]
 	f.mu.Unlock()
-	ft.done = done
 	f.submitted <- ft
 	return nil
 }
diff --git a/usb/transfer_test.go b/usb/transfer_test.go
index 97a2586..a59897a 100644
--- a/usb/transfer_test.go
+++ b/usb/transfer_test.go
@@ -93,18 +93,18 @@ func TestTransferProtocol(t *testing.T) {
 		ft.length = 5
 		ft.status = TransferCompleted
 		copy(ft.buf, []byte{1, 2, 3, 4, 5})
-		close(ft.done)
+		ft.done <- struct{}{}
 
 		ft = f.waitForSubmitted()
 		ft.length = 99
 		ft.status = TransferCompleted
 		copy(ft.buf, []byte{12, 12, 12, 12, 12})
-		close(ft.done)
+		ft.done <- struct{}{}
 
 		ft = f.waitForSubmitted()
 		ft.length = 123
 		ft.status = TransferCancelled
-		close(ft.done)
+		ft.done <- struct{}{}
 	}()
 
 	xfers[0].submit()