diff --git a/GPClient/gpclient.cpp b/GPClient/gpclient.cpp
index 1a3ca02..03e97d9 100644
--- a/GPClient/gpclient.cpp
+++ b/GPClient/gpclient.cpp
@@ -69,12 +69,14 @@ void GPClient::setupSettings()
 void GPClient::onSettingsButtonClicked()
 {
     settingsDialog->setClientos(settings::get("clientos", "Linux").toString());
+    settingsDialog->setOsVersion(settings::get("os-version", QSysInfo::prettyProductName()).toString());
     settingsDialog->show();
 }
 
 void GPClient::onSettingsAccepted()
 {
     settings::save("clientos", settingsDialog->clientos());
+    settings::save("os-version", settingsDialog->osVersion());
 }
 
 void GPClient::on_connectButton_clicked()
diff --git a/GPClient/loginparams.cpp b/GPClient/loginparams.cpp
index 3126231..21ea259 100644
--- a/GPClient/loginparams.cpp
+++ b/GPClient/loginparams.cpp
@@ -1,6 +1,9 @@
 #include <QtCore/QUrlQuery>
 
 #include "loginparams.h"
+#include "gphelper.h"
+
+using namespace gpclient::helper;
 
 LoginParams::LoginParams(const QString clientos)
 {
@@ -14,13 +17,18 @@ LoginParams::LoginParams(const QString clientos)
     params.addQueryItem("ok", "Login");
     params.addQueryItem("direct", "yes");
     params.addQueryItem("clientVer", "4100");
-    params.addQueryItem("os-version", QUrl::toPercentEncoding(QSysInfo::prettyProductName()));
 
     // add the clientos parameter if not empty
     if (!clientos.isEmpty()) {
         params.addQueryItem("clientos", clientos);
     }
 
+    auto osVersion = settings::get("os-version", "").toString();
+    if (osVersion.isEmpty()) {
+        osVersion = QSysInfo::prettyProductName();
+    }
+    params.addQueryItem("os-version", QUrl::toPercentEncoding(osVersion));
+
     params.addQueryItem("portal-userauthcookie", "");
     params.addQueryItem("portal-prelogonuserauthcookie", "");
     params.addQueryItem("prelogin-cookie", "");
diff --git a/GPClient/settingsdialog.cpp b/GPClient/settingsdialog.cpp
index e2e28d4..51e230f 100644
--- a/GPClient/settingsdialog.cpp
+++ b/GPClient/settingsdialog.cpp
@@ -32,3 +32,11 @@ QString SettingsDialog::clientos()
 {
     return ui->clientosInput->text();
 }
+
+void SettingsDialog::setOsVersion(QString osVersion) {
+    ui->osVersionInput->setText(osVersion);
+}
+
+QString SettingsDialog::osVersion() {
+    return ui->osVersionInput->text();
+}
diff --git a/GPClient/settingsdialog.h b/GPClient/settingsdialog.h
index 9e29e48..ab2a607 100644
--- a/GPClient/settingsdialog.h
+++ b/GPClient/settingsdialog.h
@@ -21,6 +21,9 @@ public:
     void setClientos(QString clientos);
     QString clientos();
 
+    void setOsVersion(QString osVersion);
+    QString osVersion();
+
 private:
     Ui::SettingsDialog *ui;
 };
diff --git a/GPClient/settingsdialog.ui b/GPClient/settingsdialog.ui
index 7a595f3..ba27742 100644
--- a/GPClient/settingsdialog.ui
+++ b/GPClient/settingsdialog.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>488</width>
-    <height>177</height>
+    <height>220</height>
    </rect>
   </property>
   <property name="sizePolicy">
@@ -44,7 +44,7 @@
    <item row="1" column="0">
     <widget class="QLabel" name="label_2">
      <property name="text">
-      <string>Value of &quot;clientos&quot;:</string>
+      <string>clientos:</string>
      </property>
     </widget>
    </item>
@@ -55,7 +55,7 @@
      </property>
     </widget>
    </item>
-   <item row="2" column="1">
+   <item row="3" column="1">
     <widget class="QDialogButtonBox" name="buttonBox">
      <property name="orientation">
       <enum>Qt::Horizontal</enum>
@@ -65,6 +65,16 @@
      </property>
     </widget>
    </item>
+   <item row="2" column="1">
+    <widget class="QLineEdit" name="osVersionInput"/>
+   </item>
+   <item row="2" column="0">
+    <widget class="QLabel" name="label_3">
+     <property name="text">
+      <string>os-version:</string>
+     </property>
+    </widget>
+   </item>
   </layout>
  </widget>
  <resources>