diff --git a/usb/fakelibusb_test.go b/usb/fakelibusb_test.go
index da58835..0cbfc00 100644
--- a/usb/fakelibusb_test.go
+++ b/usb/fakelibusb_test.go
@@ -306,7 +306,7 @@ func newFakeLibusb() *fakeLibusb {
 		// without using the full USB stack. Since the fake library uses the
 		// libusbDevice only as an identifier, use an arbitrary unique pointer.
 		// The contents of these pointers is never accessed.
-		fl.fakeDevices[(*libusbDevice)(newCPointer())] = &fakeDevice{
+		fl.fakeDevices[newDevicePointer()] = &fakeDevice{
 			desc: d,
 			alt:  0,
 		}
diff --git a/usb/libusb.go b/usb/libusb.go
index 355ce07..9e4da56 100644
--- a/usb/libusb.go
+++ b/usb/libusb.go
@@ -426,6 +426,6 @@ func libusbSetDebug(c *libusbContext, lvl int) {
 	C.libusb_set_debug((*C.libusb_context)(c), C.int(lvl))
 }
 
-func newCPointer() unsafe.Pointer {
-	return unsafe.Pointer(C.malloc(1))
+func newDevicePointer() *libusbDevice {
+	return (*libusbDevice)(unsafe.Pointer(C.malloc(1)))
 }