1 files changed, 2 insertions, 1 deletions
diff --git a/src/org/traccar/protocol/Tk103ProtocolDecoder.java b/src/org/traccar/protocol/Tk103ProtocolDecoder.java
index 81481ced8..e51f8dea5 100644
--- a/src/org/traccar/protocol/Tk103ProtocolDecoder.java
+++ b/src/org/traccar/protocol/Tk103ProtocolDecoder.java
@@ -24,6 +24,7 @@ import org.jboss.netty.channel.Channel;
 import org.jboss.netty.channel.ChannelHandlerContext;
 
 import org.traccar.BaseProtocolDecoder;
+import org.traccar.helper.UnitsConverter;
 import org.traccar.model.Event;
 import org.traccar.model.Position;
 
@@ -120,7 +121,7 @@ public class Tk103ProtocolDecoder extends BaseProtocolDecoder {
         position.setLongitude(longitude);
 
         // Speed
-        position.setSpeed(Double.valueOf(parser.group(index++)) * 0.539957);
+        position.setSpeed(UnitsConverter.knotsFromKph(Double.valueOf(parser.group(index++))));
 
         // Time
         time.set(Calendar.HOUR_OF_DAY, Integer.valueOf(parser.group(index++)));