diff --git a/TODO b/TODO
index 48ea8ac6..580adda6 100644
--- a/TODO
+++ b/TODO
@@ -31,6 +31,7 @@ APPEND ONLY FILE
 OPTIMIZATIONS
 =============
 
+* Avoid COW due to incrementing the dict iterators counter.
 * SORT: Don't copy the list into a vector when BY argument is constant.
 * Write the hash table size of every db in the dump, so that Redis can resize the hash table just one time when loading a big DB.
 * Read-only mode for slaves.