diff --git a/2chAPIProxy/DatProxy.cs b/2chAPIProxy/DatProxy.cs
index a72ad39..827e26f 100644
--- a/2chAPIProxy/DatProxy.cs
+++ b/2chAPIProxy/DatProxy.cs
@@ -1129,6 +1129,8 @@ private void ResPostv2(Session oSession, bool is2ch)
                     false => Encoding.GetEncoding("Shift_JIS")
                 };
 
+                //ReqBody += "&sid=Monazilla/2.00:08urgq8vn478951437vn89574389v7843y584vht";
+
                 // リクエストボディの分解（URLデコードもしておく）
                 var post_field_map = ReqBody.Split('&')
                                     .Select(kvpair => kvpair.Split('='))
@@ -1184,7 +1186,7 @@ private void ResPostv2(Session oSession, bool is2ch)
                         if (m.Success)
                         {
                             // クッキーにある場合（一般ブラウザ、sikiなど？）
-                            // クッキーはsid=xxxxの形で保存されてる
+                            // クッキーはsid=xxxxの形で保存されてる（はず
                             Write.Headers.Add("X-Ronin-Sid", m.Value);
                         }
                     }
diff --git a/2chAPIProxy/MainWindow.xaml b/2chAPIProxy/MainWindow.xaml
index 084ab2c..6dcfa9f 100644
--- a/2chAPIProxy/MainWindow.xaml
+++ b/2chAPIProxy/MainWindow.xaml
@@ -2,7 +2,7 @@
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:local="clr-namespace:_2chAPIProxy" mc:Ignorable="d" x:Class="_2chAPIProxy.MainWindow"
-        Title="2chAPIProxy Ver:2022.04.12 test" Height="480" Width="640"
+        Title="2chAPIProxy Ver:2022.04.25 test" Height="480" Width="640"
         Icon="icon3.ico" WindowStartupLocation="CenterScreen" ResizeMode="CanMinimize" Background="White" d:DataContext="{d:DesignInstance {x:Type local:ViewModel}}">
     <Window.InputBindings>
         <KeyBinding Gesture="Ctrl+S" Command="{Binding SaveSetting}"/>
diff --git a/2chAPIProxy/ViewModels/ViewModel.cs b/2chAPIProxy/ViewModels/ViewModel.cs
index f8c8c06..5e4cbde 100644
--- a/2chAPIProxy/ViewModels/ViewModel.cs
+++ b/2chAPIProxy/ViewModels/ViewModel.cs
@@ -206,6 +206,7 @@ public void Init()
             DatProxy.AddMsToNonce = AddMsToNonce;
             DatProxy.AssumeReqBodyIsUTF8 = AssumeReqBodyIsUTF8;
             DatProxy.Monakey = Setting.Monakey;
+            if (string.IsNullOrEmpty(Setting.Monakey)) DatProxy.ResetMonakey();
 
             //設定の適用、APIアクセスクラス
             DatProxy.APIMediator.AppKey = this.Appkey;
diff --git "a/doc/\346\233\270\343\201\215\350\276\274\343\201\277\346\226\260\344\273\225\346\247\230\351\226\242\351\200\243.md" "b/doc/\346\233\270\343\201\215\350\276\274\343\201\277\346\226\260\344\273\225\346\247\230\351\226\242\351\200\243.md"
index b1f1a33..d2c439a 100644
--- "a/doc/\346\233\270\343\201\215\350\276\274\343\201\277\346\226\260\344\273\225\346\247\230\351\226\242\351\200\243.md"
+++ "b/doc/\346\233\270\343\201\215\350\276\274\343\201\277\346\226\260\344\273\225\346\247\230\351\226\242\351\200\243.md"
@@ -1112,4 +1112,55 @@ Content-Encoding:
 Content-Type:text/html; charset=Shift_JIS
 Date:Sun, 10 Apr 2022 17:24:14 GMT
 Server:cloudflare
+```
+
+# X-Ronin-Sidに適当な値を入れて送ったとき
+
+
+```
+オリジナルリクエストヘッダ
+Host:egg.5ch.net
+User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Firefox/91.0
+Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
+Accept-Language:ja,en-US;q=0.7,en;q=0.3
+Accept-Encoding:gzip, deflate
+Referer:http://egg.5ch.net/test/read.cgi/software/1650247139/
+Upgrade-Insecure-Requests:1
+Content-Type:application/x-www-form-urlencoded
+Content-Length:140
+Connection:keep-alive
+
+リクエストヘッダ
+Referer:https://egg.5ch.net/test/read.cgi/software/1650247139/
+X-PostSig:fbaaf4d2fe631152d34030a9253862e669768f6365ad933f43851e42242b961e
+X-APIKey:8yoeAcaLXiEY1FjEuJBKgkPxirkDqn
+X-PostNonce:1650792234.765
+X-MonaKey:b1fd22457df0fc0d096dbeb719f15a006449599cb5d181e0d90bdc382c91f964
+X-2ch-UA:2chMate/0.8.10.153
+X-Ronin-Sid:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+User-Agent:Monazilla/1.00 2chMate/0.8.10.153 Dalvik/2.1.0 (Linux; U; Android 11; SC-52B Build/RP1A.200720.012; 60)
+Accept-Encoding:gzip
+Content-Type:application/x-www-form-urlencoded; charset=UTF-8
+Host:egg.5ch.net
+Content-Length:148
+Connection:Keep-Alive
+
+レスポンスヘッダ
+Connection:close
+X-InqID:egg/700dcc7c3d368344;
+X-Robots-Tag:noindex;
+X-Chx-Error:6200 Invalid RONIN SID;
+X-PostPlace:software/1650247139
+X-RONIN-Stat:NONE
+X-Condition:0/0
+X-Proc-Time:0.124839 sec.
+X-BBx-Stat:180.60.38.129, NONE
+Vary:Accept-Encoding
+CF-Cache-Status:DYNAMIC
+Expect-CT:max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
+CF-RAY:700dcc7c3d368344-KIX
+Content-Encoding:
+Content-Type:text/html; charset=Shift_JIS
+Date:Sun, 24 Apr 2022 09:26:42 GMT
+Server:cloudflare
 ```
\ No newline at end of file