diff --git a/tarpit/tarpit.go b/tarpit/tarpit.go
index c701c48..635aaba 100644
--- a/tarpit/tarpit.go
+++ b/tarpit/tarpit.go
@@ -31,7 +31,7 @@ func New(workers int, contentType string, period, timeslice time.Duration, minRe
 
 	t := &Tarpit{
 		contentType:    contentType,
-		numTimeslices:  (int(period) + int(timeslice) - 1) / int(timeslice),
+		numTimeslices:  int((period + timeslice - 1) / timeslice),
 		timeslice:      timeslice,
 		minResponseLen: minResponseLen,
 		maxResponseLen: maxResponseLen,