diff --git a/api/src/main/java/net/md_5/bungee/api/event/ServerDisconnectEvent.java b/api/src/main/java/net/md_5/bungee/api/event/ServerDisconnectEvent.java
index 2823b716..0ba38b41 100644
--- a/api/src/main/java/net/md_5/bungee/api/event/ServerDisconnectEvent.java
+++ b/api/src/main/java/net/md_5/bungee/api/event/ServerDisconnectEvent.java
@@ -25,5 +25,5 @@ public class ServerDisconnectEvent extends Event
      * Server the player is disconnecting from.
      */
     @NonNull
-    private ServerInfo target;
+    private final ServerInfo target;
 }