diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 832b5f4..bfc9a35 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -499,6 +499,15 @@
 		break;
 
 	case HCI_FILTER:
+		{
+			struct hci_filter *f = &hci_pi(sk)->filter;
+
+			uf.type_mask = f->type_mask;
+			uf.opcode    = f->opcode;
+			uf.event_mask[0] = *((u32 *) f->event_mask + 0);
+			uf.event_mask[1] = *((u32 *) f->event_mask + 1);
+		}
+
 		len = min_t(unsigned int, len, sizeof(uf));
 		if (copy_from_user(&uf, optval, len)) {
 			err = -EFAULT;