diff --git a/src/todo.txt b/src/todo.txt
index 9b3b48e..03c0c89 100644
--- a/src/todo.txt
+++ b/src/todo.txt
@@ -3,3 +3,4 @@
   goal selection might ignore that goal then, for further selection.
 - Maybe it helps to fix the agents of the claim run (i.e. all different
   agents?, this restricts the attacks somewhat), make a switch for this.
+- SConstruct file should check whether ctags actually exists (avoiding errors)