diff --git a/406try-divide.mu b/406int32.mu
similarity index 98%
rename from 406try-divide.mu
rename to 406int32.mu
index d8588162..4d762678 100644
--- a/406try-divide.mu
+++ b/406int32.mu
@@ -1,3 +1,5 @@
+# Some slow but convenient helpers
+
 # slow, iterative divide instruction
 # preconditions: _nr >= 0, _dr > 0
 fn try-divide _nr: int, _dr: int -> _/eax: int {