1 files changed, 2 insertions, 1 deletions
diff --git a/TODO b/TODO
index 56d8dbe..0327bca 100644
--- a/TODO
+++ b/TODO
@@ -5,9 +5,10 @@ Add zsets_radix
 Add zstr_radix
 
 Test big endian
-Test always having used > 0 for zero
+Test always having .used > 0 for zero
   Test negative/non-negative instead of sign
 Test long .sign
+Test always having .chars % 4 == 0
 
 Test optimisation of zmul:
   bc = [(Hb * Hc) << (m2 << 1)]