diff --git a/v2rayN/v2rayN/Forms/MainForm.cs b/v2rayN/v2rayN/Forms/MainForm.cs
index 4a0f04b9..1b5a03da 100644
--- a/v2rayN/v2rayN/Forms/MainForm.cs
+++ b/v2rayN/v2rayN/Forms/MainForm.cs
@@ -1103,8 +1103,10 @@ namespace v2rayN.Forms
             {
                 up /= (ulong)(config.statisticsFreshRate / 1000f);
                 down /= (ulong)(config.statisticsFreshRate / 1000f);
-                toolSslServerSpeed.Text = string.Format("{0}/s↑ | {1}/s↓", Utils.HumanFy(up), Utils.HumanFy(down));
-
+                this.Invoke((MethodInvoker)(delegate
+                {
+                    toolSslServerSpeed.Text = string.Format("{0}/s↑ | {1}/s↓", Utils.HumanFy(up), Utils.HumanFy(down));
+                }));
                 List<string[]> datas = new List<string[]>();
                 for (int i = 0; i < config.vmess.Count; i++)
                 {