1 files changed, 1 insertions, 1 deletions
diff --git a/src/org/traccar/protocol/CalAmpProtocolDecoder.java b/src/org/traccar/protocol/CalAmpProtocolDecoder.java
index 9e9bd1336..d495e7400 100644
--- a/src/org/traccar/protocol/CalAmpProtocolDecoder.java
+++ b/src/org/traccar/protocol/CalAmpProtocolDecoder.java
@@ -152,7 +152,7 @@ public class CalAmpProtocolDecoder extends BaseProtocolDecoder {
             int content = buf.readUnsignedByte();
 
             if (BitUtil.check(content, 0)) {
-                String id = ByteBufUtil.hexDump(buf.readBytes(buf.readUnsignedByte()));
+                String id = ByteBufUtil.hexDump(buf.readSlice(buf.readUnsignedByte()));
                 getDeviceSession(channel, remoteAddress, id);
             }