diff --git a/migration.md b/migration.md
index 7d48273c2..176b8c052 100644
--- a/migration.md
+++ b/migration.md
@@ -100,13 +100,22 @@ Every networked prefab and scene object needs to be adjusted.  They will be usin
 Note that if you remove and add a NetworkIdentity,  you will need to reassign it in any component that was referencing it.
 
 ## 8. Update Extended Components
-Some commonly extended components, such as NetworkManager, have changed method parameters in Mirror. A commonly used override is OnServerAddPlayer. In your newly Mirror-capable NetworkManager, if you are using the OnServerAddPlayer override, make sure that it takes the correct parameters:
-```
-public override void OnServerAddPlayer(NetworkConnection conn){
-    base.OnServerAddPlayer(conn);
+Some commonly extended components, such as NetworkManager, have changed method parameters in Mirror. A commonly used override is OnServerAddPlayer. Using the original HLAPI, your override may have looked like this:
+```C#
+public override void OnServerAddPlayer(NetworkConnection conn, short playerControllerId, NetworkReader extraMessageReader)
+{
+    base.OnServerAddPlayer(conn, playerControllerId, extraMessageReader);
     // your code
 }
 ```
+In your newly Mirror-capable NetworkManager, if you are using the OnServerAddPlayer override, remove the "playerControllerId" parameter from your override and the base call:
+```C#
+public override void OnServerAddPlayer(NetworkConnection conn, NetworkReader extraMessageReader){
+    base.OnServerAddPlayer(conn, extraMessageReader);
+    // your code
+}
+```
+Note that in both HLAPI and Mirror the parameter "extraMessageReader" is optional.
 
 ## 9. Update your firewall and router
 LLAPI uses UDP.   Mirror uses TCP by default.  This means you may need to change your router