diff --git a/README.md b/README.md
index c7af64e..242a17e 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,8 @@ then run
                                   unwanted logins, set a server password
   - HIDE_SERVER                 | Whether you want your server public or not -> Default : 0 (public)
   - MAX_PLAYERS                 | Max player count -> Default : 32
+  - PACKMASK                    | Leave empty to change server mode to United -> Default : stadium
+                                  (Nations)
 ```
 
 ### Gamemodes
diff --git a/tmserver/GameData/Config/config.xml b/tmserver/GameData/Config/config.xml
index a8b9b49..9f656a8 100644
--- a/tmserver/GameData/Config/config.xml
+++ b/tmserver/GameData/Config/config.xml
@@ -77,7 +77,7 @@
 		<guestlist_filename></guestlist_filename>
 		<blacklist_filename></blacklist_filename>
 		
-		<packmask>stadium</packmask>
+		<packmask>@PACKMASK@</packmask>
 
 		<allow_spectator_relays>False</allow_spectator_relays>
 
diff --git a/tmserver/bin/eval_env.sh b/tmserver/bin/eval_env.sh
index 21e5a5d..990daaf 100755
--- a/tmserver/bin/eval_env.sh
+++ b/tmserver/bin/eval_env.sh
@@ -28,6 +28,8 @@ HIDE_SERVER=${HIDE_SERVER:-0} && config+=( "HIDE_SERVER" )
 echo "INFO | HIDE_SERVER: ${HIDE_SERVER}"
 MAX_PLAYERS=${MAX_PLAYERS:-32} && config+=( "MAX_PLAYERS" )
 echo "INFO | MAX_PLAYERS: ${MAX_PLAYERS}"
+PACKMASK=${PACKMASK:-stadium} && config+=( "PACKMASK" )
+echo "INFO | PACKMASK: ${PACKMASK}"
 
 # Game Config
 GAMEMODE=${GAMEMODE:-1} && playlist+=( "GAMEMODE" )