diff --git a/src/org/traccar/protocol/NvsProtocolDecoder.java b/src/org/traccar/protocol/NvsProtocolDecoder.java
index 5597c8bbbb7..0c15f6fc5a9 100644
--- a/src/org/traccar/protocol/NvsProtocolDecoder.java
+++ b/src/org/traccar/protocol/NvsProtocolDecoder.java
@@ -16,6 +16,7 @@
 package org.traccar.protocol;
 
 import org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
 import org.jboss.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.helper.UnitsConverter;
@@ -36,7 +37,7 @@ public NvsProtocolDecoder(NvsProtocol protocol) {
 
     private void sendResponse(Channel channel, String response) {
         if (channel != null) {
-            channel.write(response);
+            channel.write(ChannelBuffers.copiedBuffer(response, Charset.defaultCharset()));
         }
     }