diff --git a/aspnetcore/tutorials/first-web-api.md b/aspnetcore/tutorials/first-web-api.md
index 68063bec0f..a0de92680e 100644
--- a/aspnetcore/tutorials/first-web-api.md
+++ b/aspnetcore/tutorials/first-web-api.md
@@ -362,6 +362,7 @@ Update the to-do item that has id = 1 and set its name to "feed fish":
 
 ```json
   {
+    "ID":1,
     "name":"feed fish",
     "isComplete":true
   }