diff --git a/dynamics/udp.go b/dynamics/udp.go
index 05f52b2..0d2e318 100644
--- a/dynamics/udp.go
+++ b/dynamics/udp.go
@@ -241,7 +241,7 @@ func decoderDynamicsTrainInfo(buf []byte) *TrainInfo {
 	trainInfo.TailSpeed2 = math.Float32frombits(binary.BigEndian.Uint32(buf[46:50]))
 	trainInfo.HeadRadarSpeed = math.Float32frombits(binary.BigEndian.Uint32(buf[50:54]))
 	trainInfo.TailRadarSpeed = math.Float32frombits(binary.BigEndian.Uint32(buf[54:58]))
-	trainInfo.Acceleration = math.Float32frombits(binary.BigEndian.Uint32(buf[58:61]))
+	trainInfo.Acceleration = math.Float32frombits(binary.BigEndian.Uint32(buf[58:62]))
 	return trainInfo
 }