diff --git a/Chapter02/prototype.go b/Chapter02/prototype.go
index e65a92e..ce25740 100644
--- a/Chapter02/prototype.go
+++ b/Chapter02/prototype.go
@@ -16,7 +16,7 @@ const (
 )
 
 func GetShirtsCloner() ShirtCloner {
-	return nil
+	return new(ShirtsCache)
 }
 
 type ShirtsCache struct{}