diff --git a/Factorial.scala b/Factorial.scala
index 65e5bc2..a987e9e 100644
--- a/Factorial.scala
+++ b/Factorial.scala
@@ -1,7 +1,7 @@
 import scala.math.BigInt
 
 object Factorial extends App {
-  def factorial(i: BigInt): BigInt = if (i == 0) 1 else i * factorial(i - 1)
+  def factorial(i: BigInt,acc: BigInt): BigInt = if (i == 0) acc else factorial(i - 1, i*acc)
 
-  println(factorial(10000))
+  println(factorial(10000,1))
 }