diff --git a/render.go b/render.go
index 193fcf3..4a5f4e6 100644
--- a/render.go
+++ b/render.go
@@ -18,7 +18,7 @@ import (
 
 const (
 	Size       = 128
-	Iterations = 1<<16 - 1
+	Iterations = (1<<16 - 1) / 256
 )
 
 var (