diff --git a/miotatsu/riscy/riscy/riscy072.hmml b/miotatsu/riscy/riscy/riscy072.hmml
index e914269..f6d0e1a 100644
--- a/miotatsu/riscy/riscy/riscy072.hmml
+++ b/miotatsu/riscy/riscy/riscy072.hmml
@@ -32,8 +32,8 @@
 [56:14][Take a lunch break][:admin]
 [56:32][Return and recap our situation with the rendered view producing a "may not be a valid 2-manifold" warning]
 [58:46][Continue to investigate the "may not be a valid 2-manifold" warning]
-[1:03:08][Increase the $fn value from 100 to 500, and hit a CGAL assertion]
-[1:04:38][Decrease the $fn value from 500 to 10, with success, then back up to 99]
+[1:03:08][Increase the fragments per arc value from 100 to 500, and hit a CGAL assertion]
+[1:04:38][Decrease the fragments per arc value from 500 to 10, with success, then back up to 99]
 [1:06:56][Reinstate and render our entire model]
 [1:09:47][Introduce ramp_corner() and adjust the ramps to fit our new corner]
 [1:22:08][Finish modelling the HiFive Unleashed area's skirt]