diff --git a/src/core/tileserver.js b/src/core/tileserver.js
index a299ebb..9d69191 100644
--- a/src/core/tileserver.js
+++ b/src/core/tileserver.js
@@ -131,9 +131,11 @@ class CanvasUpdater {
     const chunkOffset = cx + cy * this.firstZoomtileWidth;
     if (~queue.indexOf(chunkOffset)) return;
     queue.push(chunkOffset);
+    /*
     logger.info(
       `Tiling: Enqueued ${cx}, ${cy} / ${this.id} for basezoom reload`,
     );
+    */
   }
 
   /*
diff --git a/src/socket/MessageBroker.js b/src/socket/MessageBroker.js
index b4fdc84..7d96142 100644
--- a/src/socket/MessageBroker.js
+++ b/src/socket/MessageBroker.js
@@ -78,6 +78,7 @@ class MessageBroker extends SocketEvents {
       }
       if (!this.shards[message]) {
         console.log(`CLUSTER: Shard ${message} connected`);
+        this.shards[message] = Date.now();
         await this.subscriber.subscribe(
           message,
           (buffer) => this.onShardBinaryMessage(buffer, message),
@@ -85,6 +86,7 @@ class MessageBroker extends SocketEvents {
         );
         // immediately give new shards informations
         this.publisher.publish('bc', this.thisShard);
+        return;
       }
       this.shards[message] = Date.now();
       return;
@@ -129,9 +131,8 @@ class MessageBroker extends SocketEvents {
   }
 
   onShardBinaryMessage(buffer, shard) {
-    if (buffer.byteLength === 0) return;
-    const opcode = buffer[0];
     try {
+      const opcode = buffer[0];
       switch (opcode) {
         case PixelUpdateMB.OP_CODE: {
           const puData = PixelUpdateMB.hydrate(buffer);
diff --git a/src/socket/SocketServer.js b/src/socket/SocketServer.js
index a187bfa..72c4493 100644
--- a/src/socket/SocketServer.js
+++ b/src/socket/SocketServer.js
@@ -471,10 +471,8 @@ class SocketServer {
   }
 
   async onBinaryMessage(buffer, ws) {
-    if (buffer.byteLength === 0) return;
-    const opcode = buffer[0];
-
     try {
+      const opcode = buffer[0];
       switch (opcode) {
         case PixelUpdate.OP_CODE: {
           const { canvasId, user } = ws;
diff --git a/src/socket/packets/ChunkUpdate.js b/src/socket/packets/ChunkUpdate.js
index b03d30a..6e34e76 100644
--- a/src/socket/packets/ChunkUpdate.js
+++ b/src/socket/packets/ChunkUpdate.js
@@ -12,19 +12,20 @@ export default {
    */
   hydrate(data) {
     const canvasId = data[1];
-    const chunk = [data[2], data[3]];
-    return [canvasId, chunk];
+    const i = data.readUInt8(2);
+    const j = data.readUInt8(3);
+    return [canvasId, [i, j]];
   },
   /*
    * @param canvasId,
    * chunkid id consisting of chunk coordinates
    */
   dehydrate(canvasId, [i, j]) {
-    return Buffer.from({
+    return Buffer.from([
       OP_CODE,
       canvasId,
       i,
       j,
-    });
+    ]);
   },
 };