diff --git a/todo.txt b/todo.txt
index 36b104a..0402799 100644
--- a/todo.txt
+++ b/todo.txt
@@ -2,6 +2,7 @@ Mobs bugs + changes
 
 * Check why ice snake and snow biter are not placing ice
 * Check why lava titan is not placing lava
+* Queen ant calls line_of_sight_water which no longer exists in mobs_redo
 
 Server-oriented changes