diff --git a/test/knifeedge.test.mjs b/test/knifeedge.test.mjs
index acaa7e2..214eac8 100644
--- a/test/knifeedge.test.mjs
+++ b/test/knifeedge.test.mjs
@@ -1,4 +1,4 @@
-// test/knifeedge.test.mjs -- RC-375D84 S-3 regression: knife-edge overhang.
+// test/knifeedge.test.mjs -- S-3 regression: knife-edge overhang.
 // A board whose COM is a hair (5px) past the support edge, with the pivot too
 // high for either end to reach the ground, is a pendulum. It must tip ONCE,
 // swing back, and REST (damped resolution) -- it must not re-tip in a