1 files changed, 1 insertions, 1 deletions
diff --git a/src/main/java/org/traccar/protocol/LaipacProtocolEncoder.java b/src/main/java/org/traccar/protocol/LaipacProtocolEncoder.java
index 0c9f8ebb8..aaa5a70f7 100644
--- a/src/main/java/org/traccar/protocol/LaipacProtocolEncoder.java
+++ b/src/main/java/org/traccar/protocol/LaipacProtocolEncoder.java
@@ -29,7 +29,7 @@ public class LaipacProtocolEncoder extends StringProtocolEncoder {
     @Override
     protected String formatCommand(Command command, String format, String... keys) {
         String sentence = super.formatCommand(command, "$" + format, keys);
-        sentence += Checksum.nmea(sentence) + "\r\n";
+        sentence += Checksum.nmea(sentence.substring(1)) + "\r\n";
         return sentence;
     }