--- a/net/minecraft/server/DimensionManager.java
+++ b/net/minecraft/server/DimensionManager.java
@@ -54,7 +54,7 @@
     }
 
     public String toString() {
-        return a(this).toString();
+        return this.e + "(" + a(this) + ")"; // CraftBukkit
     }
 
     @Nullable