diff --git a/Class_Diagram.md b/Class_Diagram.md
index 9277057..e337a15 100644
--- a/Class_Diagram.md
+++ b/Class_Diagram.md
@@ -156,7 +156,7 @@ package Model <<Frame>> #bada55 {
   
     class MasterOfCeremonies $done {
       /+GlobalPlayerManager: IManager<Player>
-      /+DiceGroupManager: IManager<KeyValuePair<string, [*] Die>>
+      /+DiceGroupManager: IManager<DiceGroup>
       /+GameManager: IManager<Game>
       {static} +PlayGame(game: Game)
       +StartNewGame(name: string, players: IManager<Player>, dice: [*] Die): Game