diff --git a/public/iserver.h b/public/iserver.h
index b61816c9..8bf5fbe2 100644
--- a/public/iserver.h
+++ b/public/iserver.h
@@ -24,6 +24,7 @@ struct EventServerAdvanceTick_t;
 struct EventServerPollNetworking_t;
 struct EventServerProcessNetworking_t;
 struct EventServerSimulate_t;
+struct EventServerEndSimulate_t;
 struct EventServerPostSimulate_t;
 struct server_state_t;
 class IPrerequisite;
@@ -65,13 +66,12 @@ public:
 	// returns current client limit
 	virtual int		GetMaxClients( void ) const = 0;
 
-	virtual float   unk001() = 0;
-
 	virtual void	ServerAdvanceTick( const EventServerAdvanceTick_t & ) = 0;
 	virtual void	ServerPollNetworking( const EventServerPollNetworking_t & ) = 0;
 	virtual void	ServerProcessNetworking( const EventServerProcessNetworking_t & ) = 0;
 
 	virtual void	ServerSimulate( const EventServerSimulate_t & ) = 0;
+	virtual void	ServerEndSimulate( const EventServerEndSimulate_t & ) = 0;
 	virtual void	ServerPostSimulate( const EventServerPostSimulate_t & ) = 0;
 
 	virtual SpawnGroupHandle_t LoadSpawnGroup( const SpawnGroupDesc_t & ) = 0;