diff --git a/worker.go b/worker.go
index 252b7ea..4f7e7b7 100644
--- a/worker.go
+++ b/worker.go
@@ -4,7 +4,7 @@ import (
 	"encoding/binary"
 	"github.com/tarm/serial"
 	"log"
-	"math/rand"
+	_ "math/rand"
 	"strconv"
 	"sync"
 )