diff --git a/src/main/java/com/osiris/autoplug/client/network/online/connections/ConFileManager.java b/src/main/java/com/osiris/autoplug/client/network/online/connections/ConFileManager.java
index b7e69745..b8adcd09 100644
--- a/src/main/java/com/osiris/autoplug/client/network/online/connections/ConFileManager.java
+++ b/src/main/java/com/osiris/autoplug/client/network/online/connections/ConFileManager.java
@@ -86,7 +86,7 @@ public boolean open() throws Exception {
     private void doProtocolForSendingRoots() throws IOException {
         File[] roots = File.listRoots();
         if (roots == null || roots.length == 0) {
-            dos.write(0);
+            dos.writeInt(0);
         } else {
             dos.writeInt(roots.length);
             for (File f :