diff --git a/1.8.md b/1.8.md
index ad201f0e..573801c6 100644
--- a/1.8.md
+++ b/1.8.md
@@ -25,6 +25,7 @@
 - Fix lint errors.
 - Remove all instances of `! -z` since they're pointless.
 - Quote all variable/command substitutions.
+- Remove all `bc` usage by simplifying math.
 
 
 ### OS