diff --git a/Chapter02/src/main/kotlin/com/packt/chapter2/smartcasts.kt b/Chapter02/src/main/kotlin/com/packt/chapter2/smartcasts.kt
index 14ba00b..e107274 100644
--- a/Chapter02/src/main/kotlin/com/packt/chapter2/smartcasts.kt
+++ b/Chapter02/src/main/kotlin/com/packt/chapter2/smartcasts.kt
@@ -27,5 +27,5 @@ fun length(any: Any): Int {
 fun safeCast() {
   val any = "/home/users"
   val string: String? = any as String
-  val file: File? = any as File
+  val file: File? = any as? File
 }
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