diff --git a/TODO b/TODO
index c444088a..571e1aa2 100644
--- a/TODO
+++ b/TODO
@@ -23,6 +23,8 @@ Version 1.4.0:
 * Distributed clocks.
 * Support slaves, that don't support the LRW datagram, only LRD/LWR.
 * Implement all EtherCAT datagram types.
+* Rename all occurrences of PDO to Pdo.
+* Rename SAVEOP to SAFEOP?
 
 Future issues: