diff --git a/drivers/hid/hid-roccat-isku.c b/drivers/hid/hid-roccat-isku.c
index ce5f225..e95d59c 100644
--- a/drivers/hid/hid-roccat-isku.c
+++ b/drivers/hid/hid-roccat-isku.c
@@ -324,6 +324,9 @@ static int isku_probe(struct hid_device *hdev,
 {
 	int retval;
 
+	if (!hid_is_usb(hdev))
+		return -EINVAL;
+
 	retval = hid_parse(hdev);
 	if (retval) {
 		hid_err(hdev, "parse failed\n");