1 files changed, 5 insertions, 2 deletions
diff --git a/src/main/java/org/traccar/protocol/ArnaviTextProtocolDecoder.java b/src/main/java/org/traccar/protocol/ArnaviTextProtocolDecoder.java
index 8c4f743bc..b99869e6e 100644
--- a/src/main/java/org/traccar/protocol/ArnaviTextProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/ArnaviTextProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 - 2019 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2020 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,6 +15,7 @@
  */
 package org.traccar.protocol;
 
+import io.netty.buffer.ByteBuf;
 import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
@@ -25,6 +26,7 @@ import org.traccar.helper.PatternBuilder;
 import org.traccar.model.Position;
 
 import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
 import java.util.regex.Pattern;
 
 public class ArnaviTextProtocolDecoder extends BaseProtocolDecoder {
@@ -65,7 +67,8 @@ public class ArnaviTextProtocolDecoder extends BaseProtocolDecoder {
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        Parser parser = new Parser(PATTERN, (String) msg);
+        ByteBuf buf = (ByteBuf) msg;
+        Parser parser = new Parser(PATTERN, buf.toString(StandardCharsets.US_ASCII));
         if (!parser.matches()) {
             return null;
         }