diff --git a/unit/test-avrcp.c b/unit/test-avrcp.c
index 09d7689..5d78a9a 100644
--- a/unit/test-avrcp.c
+++ b/unit/test-avrcp.c
@@ -1016,5 +1016,19 @@ int main(int argc, char *argv[])
 				AVRCP_REGISTER_NOTIFICATION,
 				0x00, 0x00, 0x01, AVRCP_STATUS_INVALID_PARAM));
 
+	/* Invalid commands */
+
+	/* Invalid PDU ID - TG */
+	define_test("/TP/INV/BI-01-C", test_server,
+			raw_pdu(0x00, 0x11, 0x0e, 0x03, 0x48, 0x00,
+				0x00, 0x19, 0x58,
+				/* Invalid PDU ID */
+				0xff,
+				0x00, 0x00, 0x00),
+			raw_pdu(0x02, 0x11, 0x0e, AVC_CTYPE_REJECTED,
+				0x48, 0x00, 0x00, 0x19, 0x58,
+				0xff, 0x00, 0x00, 0x01,
+				AVRCP_STATUS_INVALID_COMMAND));
+
 	return g_test_run();
 }