diff --git a/TODO b/TODO
index 13ce5477..e38adfbb 100644
--- a/TODO
+++ b/TODO
@@ -14,7 +14,6 @@ Working TODO list:
 
    - improved error handling:
      - param count checks
-       * some rudimentary support in runtime
        * should have checks in compiler as well. could possibly
          use prim metadata to autogenerate the runtime checks (later, perhaps)
      - type checking
@@ -24,6 +23,7 @@ Working TODO list:
 
      - error checking
        need errors for things such as file not existing, to bullet-proof the runtime
+       some things to check for - file not found, divide by zero. what else?
 
      without these, it will be impossible (or at least time-consuming) to debug issues going forward