2 files changed, 5 insertions, 2 deletions
diff --git a/src/main/java/org/traccar/protocol/NavisetProtocolDecoder.java b/src/main/java/org/traccar/protocol/NavisetProtocolDecoder.java
index d67fae78c..10d71d76c 100644
--- a/src/main/java/org/traccar/protocol/NavisetProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/NavisetProtocolDecoder.java
@@ -72,15 +72,15 @@ public class NavisetProtocolDecoder extends BaseProtocolDecoder {
                 return null;
             }
 
+            int blockMask = buf.readUnsignedByte();
+
             while (buf.readableBytes() > 2) {
 
                 Position position = new Position(getProtocolName());
                 position.setDeviceId(deviceSession.getDeviceId());
-                int blockMask = buf.readUnsignedByte();
 
                 position.set(Position.KEY_INDEX, buf.readUnsignedShortLE());
                 position.set(Position.KEY_STATUS, buf.readUnsignedByte());
-
                 position.setValid(true);
                 position.setTime(new Date(buf.readUnsignedIntLE() * 1000));
                 position.setLatitude(buf.readUnsignedIntLE() * 0.000001);
diff --git a/src/test/java/org/traccar/protocol/NavisetProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/NavisetProtocolDecoderTest.java
index c4b0ca73a..09ea10f1f 100644
--- a/src/test/java/org/traccar/protocol/NavisetProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/NavisetProtocolDecoderTest.java
@@ -14,6 +14,9 @@ public class NavisetProtocolDecoderTest extends ProtocolTest {
                 "1310e4073836383230343030353935383436362a060716"));
 
         verifyPositions(decoder, binary(
+                "6b511a203f95162b7822515d78a92503042df6030000ff040000c4003f1922471000001af3000030e4503490e8ff00000000000000000000000000000000ff27000000000000808080808080808000000000ffdd0000000000000000000000000000000000000000000000210000000000ff00000000000000000000000000000000000000000000ff00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096160b7d22515d3ca92503e42cf6030000ff040000c7001ef521471000001af3000070e44034e0e8ff00000000000000000000000000000000ff27000000000000808080808080808000000000ffdd0000000000000000000000000000000000000000000000210000000000ff00000000000000000000000000000000000000000000ff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000664a"));
+
+        verifyPositions(decoder, binary(
                 "b7501a203fab0d0bffcf4b5df0a82503a02cf6030000ff0c4200ba0007462a3a10000098280000f0f610fc4042ff00000000000000000000000000000000ff26000000000000808080808080808000000000ff000000000000000000000000000000000000000000000000000000000000ff00000000000000000000000000000000000000000000ff0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008bff"));
 
         verifyPositions(decoder, binary(