diff --git a/compiler/TODO b/compiler/TODO
index e8750fbc..4124ca20 100644
--- a/compiler/TODO
+++ b/compiler/TODO
@@ -29,4 +29,6 @@ hierarchical_predecode3x8 to hierarchical_predecode class
 Fix stimuli.py to be more readable.
 
 Change the delay measurement to be from the negative clock edge to 
-remove the dependency on the clock period.
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+remove the dependency on the clock period.
+
+Remove duplicate clock inverter in MS flop.
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