diff --git a/internal/endpoint/mqtt.go b/internal/endpoint/mqtt.go
index f4184725..98003675 100644
--- a/internal/endpoint/mqtt.go
+++ b/internal/endpoint/mqtt.go
@@ -3,7 +3,7 @@ package endpoint
 import (
 	"crypto/tls"
 	"crypto/x509"
-	"crypto/rand"
+	"math/rand"
 	"fmt"
 	"io/ioutil"
 	"sync"