diff --git a/make_cuts.imba b/make_cuts.imba
index 0be19c1..b758ff2 100644
--- a/make_cuts.imba
+++ b/make_cuts.imba
@@ -45,8 +45,9 @@ def to_hms secs
 	[
 		Math.floor secs / 3600
 		Math.floor (secs % 3600) / 60
-		(Math.round((secs % 3600 % 60) * 1000) / 1000).toFixed(3)
-	].map(do String($1).padStart(2,0)).join("-")
+		Math.floor ((secs % 3600 % 60) * 1000) / 1000
+	].map(do String($1).padStart(2,0)).join("-") +
+		'.' + String(Math.floor secs % 1 * 1000).padEnd(3,0)
 
 def main