diff --git a/Facepunch.Steamworks/SteamServer.cs b/Facepunch.Steamworks/SteamServer.cs
index c1164b8..0c0424e 100644
--- a/Facepunch.Steamworks/SteamServer.cs
+++ b/Facepunch.Steamworks/SteamServer.cs
@@ -55,6 +55,9 @@ public static void Init( AppId appid, SteamServerInit init )
 			if ( init.IpAddress != null )
 				ipaddress = Utility.IpToInt32( init.IpAddress );
 
+			System.Environment.SetEnvironmentVariable( "SteamAppId", appid.ToString() );
+			System.Environment.SetEnvironmentVariable( "SteamGameId", appid.ToString() );
+
 			//
 			// Get other interfaces
 			//