diff --git a/core/src/mindustry/net/ArcNetProvider.java b/core/src/mindustry/net/ArcNetProvider.java
index 15028d37f9..e7a1a33dd6 100644
--- a/core/src/mindustry/net/ArcNetProvider.java
+++ b/core/src/mindustry/net/ArcNetProvider.java
@@ -94,7 +94,9 @@ public class ArcNetProvider implements NetProvider{
         server.setMulticast(multicastGroup, multicastPort);
         server.setDiscoveryHandler((address, handler) -> {
             ByteBuffer buffer = NetworkIO.writeServerData();
+            int length = buffer.position();
             buffer.position(0);
+            buffer.limit(length);
             handler.respond(buffer);
         });