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-rw-r--r--src/main/java/org/traccar/protocol/IotmProtocolDecoder.java2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/main/java/org/traccar/protocol/IotmProtocolDecoder.java b/src/main/java/org/traccar/protocol/IotmProtocolDecoder.java
index bdc691d27..7bbe6c8de 100644
--- a/src/main/java/org/traccar/protocol/IotmProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/IotmProtocolDecoder.java
@@ -260,7 +260,7 @@ public class IotmProtocolDecoder extends BaseProtocolDecoder {
MqttSubscribeMessage message = (MqttSubscribeMessage) msg;
MqttMessage response = MqttMessageBuilders.subAck()
- .packetId((short) message.variableHeader().messageId())
+ .packetId(message.variableHeader().messageId())
.build();
if (channel != null) {