diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 3e1803592bd4..5c72aef3d3dd 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1202,6 +1202,7 @@ int hid_open_report(struct hid_device *device)
 	__u8 *end;
 	__u8 *next;
 	int ret;
+	int i;
 	static int (*dispatch_type[])(struct hid_parser *parser,
 				      struct hid_item *item) = {
 		hid_parser_main,
@@ -1252,6 +1253,8 @@ int hid_open_report(struct hid_device *device)
 		goto err;
 	}
 	device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
+	for (i = 0; i < HID_DEFAULT_NUM_COLLECTIONS; i++)
+		device->collection[i].parent_idx = -1;
 
 	ret = -EINVAL;
 	while ((next = fetch_item(start, end, &item)) != NULL) {