diff --git a/src/todo.txt b/src/todo.txt
index 4dd0047..b234873 100644
--- a/src/todo.txt
+++ b/src/todo.txt
@@ -1,3 +1,5 @@
+- There is a possible memory leak when buffering attacks, e.g. with -p0.
+  Investigate.
 - Make --with-argtabledir= something switch, replacing
   README/galious-configure.sh constructs.
 - Move initial intruder knowledge maybe into the title of the MSC.