diff --git a/public/iserver.h b/public/iserver.h
index ec28c4b4..29d84543 100644
--- a/public/iserver.h
+++ b/public/iserver.h
@@ -82,6 +82,7 @@ public:
 
 	// returns current client limit
 	virtual int		GetMaxClients( void ) const = 0;
+	virtual float	GetTickInterval( void ) const = 0;
 
 	virtual void	ServerAdvanceTick( const EventServerAdvanceTick_t & ) = 0;
 	virtual void	ServerPollNetworking( const EventServerPollNetworking_t & ) = 0;