diff --git a/src/N_m3u8DL-RE.Common/Resource/StaticText.cs b/src/N_m3u8DL-RE.Common/Resource/StaticText.cs
index f8ec5fe..dc89ce5 100644
--- a/src/N_m3u8DL-RE.Common/Resource/StaticText.cs
+++ b/src/N_m3u8DL-RE.Common/Resource/StaticText.cs
@@ -246,9 +246,9 @@ namespace N_m3u8DL_RE.Common.Resource
             ),
             ["cmd_customProxy"] = new TextContainer
             (
-                zhCN: "设置请求代理",
-                zhTW: "設置請求代理",
-                enUS: "Set web request proxy"
+                zhCN: "设置请求代理, 如 http://127.0.0.1:8888",
+                zhTW: "設置請求代理, 如 http://127.0.0.1:8888",
+                enUS: "Set web request proxy, like http://127.0.0.1:8888"
             ),
             ["cmd_useSystemProxy"] = new TextContainer
             (
diff --git a/src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs b/src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs
index 9047b6a..e5a7efa 100644
--- a/src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs
+++ b/src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs
@@ -92,13 +92,11 @@ namespace N_m3u8DL_RE.CommandLine
             {
                 if (string.IsNullOrEmpty(input))
                     return null;
-                if (!input.StartsWith("http"))
-                    throw new ArgumentException("url must starts with http");
                 return new WebProxy(new Uri(input));
             }
             catch (Exception ex)
             {
-                result.ErrorMessage = $"error in parse {input}: " + ex.Message;
+                result.ErrorMessage = $"error in parse proxy: " + ex.Message;
                 return null;
             }
         }