diff --git a/src/main/java/com/corundumstudio/socketio/AckRequest.java b/src/main/java/com/corundumstudio/socketio/AckRequest.java
index 44b5ef8..7938557 100644
--- a/src/main/java/com/corundumstudio/socketio/AckRequest.java
+++ b/src/main/java/com/corundumstudio/socketio/AckRequest.java
@@ -52,16 +52,26 @@ public class AckRequest {
      * Send ack data to client.
      * Can be invoked only once.
      *
-     * @param obj - ack data object
+     * @param objs - ack data objects
      */
-    public void sendAckData(Object obj) {
+    public void sendAckData(Object ... objs) {
+        List<Object> args = Arrays.asList(objs);
+        sendAckData(args);
+    }
+
+    /**
+     * Send ack data to client.
+     * Can be invoked only once.
+     *
+     * @param objs - ack data object list
+     */
+    public void sendAckData(List<Object> objs) {
         if (!isAckRequested() || !sended.compareAndSet(false, true)) {
             return;
         }
         Packet ackPacket = new Packet(PacketType.ACK);
         ackPacket.setAckId(originalPacket.getId());
-        List<Object> args = Arrays.asList(obj);
-        ackPacket.setArgs(args);
+        ackPacket.setArgs(objs);
         client.send(ackPacket);
     }
 
diff --git a/src/main/java/com/corundumstudio/socketio/PacketHandler.java b/src/main/java/com/corundumstudio/socketio/PacketHandler.java
index 9de4657..f884589 100644
--- a/src/main/java/com/corundumstudio/socketio/PacketHandler.java
+++ b/src/main/java/com/corundumstudio/socketio/PacketHandler.java
@@ -64,7 +64,7 @@ public class PacketHandler extends SimpleChannelUpstreamHandler {
                 SocketIOClient client = message.getClient().getChildClient(ns);
                 AckRequest ackSender = new AckRequest(packet, client);
                 packetListener.onPacket(packet, client, ackSender);
-                ackSender.sendAckData(null);
+                ackSender.sendAckData((Object)null);
             }
         } else {
             ctx.sendUpstream(e);