diff --git a/docs/csharp/tour-of-csharp/tutorials/hello-world.yml b/docs/csharp/tour-of-csharp/tutorials/hello-world.yml
index ddf579a8f2481..9c31d04044d48 100644
--- a/docs/csharp/tour-of-csharp/tutorials/hello-world.yml
+++ b/docs/csharp/tour-of-csharp/tutorials/hello-world.yml
@@ -60,6 +60,9 @@ items:
     the name to one of your friends. Add these two lines in the interactive window
     following the code you've already added.  Make sure you keep the declaration
     of the `aFriend` variable and its initial assignment.
+    
+    > [!IMPORTANT]
+    > Don't delete the declaration of `aFriend`. Add the code below following the existing declaration.
 
     ```csharp
     aFriend = "Maira";