diff --git a/subjects/unzipstring/README.md b/subjects/unzipstring/README.md
index 88fc8acb..f6991132 100644
--- a/subjects/unzipstring/README.md
+++ b/subjects/unzipstring/README.md
@@ -40,6 +40,7 @@ func main() {
     fmt.Println(piscine.Unzipstring("2p4;7g"))
     fmt.Println(piscine.Unzipstring("2t4dD"))
     fmt.Println(piscine.Unzipstring("82t4D"))
+    fmt.Println(piscine.Unzipstring(""))
 }
 ```
 
@@ -55,4 +56,5 @@ $Invalid Input
 $Invalid Input
 $Invalid Input
 $Invalid Input
+$Invalid Input
 ```