diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index 6f5cada..ed76cff 100644
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -103,14 +103,14 @@
     dataDir = "/persist/var/lib/minecraft";
     
     serverProperties = {
-      server-port = 43000;
+      server-port = 25565;
       difficulty = 3;
       gamemode = 1;
       max-players = 10;
       motd = "NixOS Minecraft server!";
       allow-cheats = true;
     };
-    jvmOpts = "-Xms4092M -Xmx4092M -XX:+UseG1GC -XX:+CMSIncrementalPacing -XX:+CMSClassUnloadingEnabled -XX:ParallelGCThreads=2 -XX:MinHeapFreeRatio=5 -XX:MaxHeapFreeRatio=10";
+    jvmOpts = "-Xms4092M -Xmx4092M -XX:+UseG1GC -XX:+CMSIncrementalPacing -XX:+CMSClassUnloadingEnabled -XX:ParallelGCThreads=2 -XX:MinHeapFreeRatio=5 -XX:MaxHeapFreeRatio=10 -Djava.net.preferIPv4Stack=true";
   };
   
   # ================================ #