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-rw-r--r--src/org/traccar/protocol/RoboTrackFrameDecoder.java2
-rw-r--r--src/org/traccar/protocol/SabertekFrameDecoder.java2
2 files changed, 2 insertions, 2 deletions
diff --git a/src/org/traccar/protocol/RoboTrackFrameDecoder.java b/src/org/traccar/protocol/RoboTrackFrameDecoder.java
index aecbaaa3b..85ed6c76f 100644
--- a/src/org/traccar/protocol/RoboTrackFrameDecoder.java
+++ b/src/org/traccar/protocol/RoboTrackFrameDecoder.java
@@ -23,7 +23,7 @@ import org.traccar.BaseFrameDecoder;
public class RoboTrackFrameDecoder extends BaseFrameDecoder {
private int messageLength(ByteBuf buf) {
- switch ((int) buf.getByte(buf.readerIndex())) {
+ switch (buf.getUnsignedByte(buf.readerIndex())) {
case RoboTrackProtocolDecoder.MSG_ID:
return 69;
case RoboTrackProtocolDecoder.MSG_ACK:
diff --git a/src/org/traccar/protocol/SabertekFrameDecoder.java b/src/org/traccar/protocol/SabertekFrameDecoder.java
index 771ef9cfb..ad5000bf8 100644
--- a/src/org/traccar/protocol/SabertekFrameDecoder.java
+++ b/src/org/traccar/protocol/SabertekFrameDecoder.java
@@ -29,7 +29,7 @@ public class SabertekFrameDecoder extends BaseFrameDecoder {
int beginIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) 0x02);
if (beginIndex >= 0) {
int endIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) 0x03);
- if (beginIndex >= 0) {
+ if (endIndex >= 0) {
buf.readerIndex(beginIndex + 1);
ByteBuf frame = buf.readRetainedSlice(endIndex - beginIndex - 1);
buf.readerIndex(endIndex + 1);