diff --git a/todo.txt b/todo.txt
index 81a9698d0b..233504fd69 100755
--- a/todo.txt
+++ b/todo.txt
@@ -137,6 +137,8 @@ Patterns are PEGs over the Nimrod AST. Patterns consist of:
       pkRule,             ## a <- b
       pkGrammar,          ## list of rules
   
+Choice operator requires capture.
+
 
 Version 2
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