diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index 3f2767f54ba7c9b77893f256da3b5a72bdd17162..000c63d22cae1fef736192d4c4415209cf855480 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -3607,7 +3607,7 @@
       <key>Type</key>
       <string>String</string>
       <key>Value</key>
-      <string>https://viewer-sidebar.secondlife.com/sidebar.html?p=[AUTH_TOKEN]&amp;lang=[LANGUAGE]&amp;channel=[CHANNEL]&amp;version=[VERSION]&amp;major=[VERSION_MAJOR]&amp;minor=[VERSION_MINOR]</string>
+      <string>https://viewer-sidebar.secondlife.com/sidebar.html?p=[AUTH_TOKEN]&amp;lang=[LANGUAGE]&amp;channel=[CHANNEL]&amp;version=[VERSION]&amp;major=[VERSION_MAJOR]&amp;minor=[VERSION_MINOR]&amp;firstlogin=[FIRST_LOGIN]</string>
     </map>
     <key>SearchURL</key>
     <map>
diff --git a/indra/newview/llweb.cpp b/indra/newview/llweb.cpp
index 100ec0bb69a2aaa7191ec126455dab00a128b4d8..3385b75c65224ebd8c06fe221b2cb49377b2a28c 100644
--- a/indra/newview/llweb.cpp
+++ b/indra/newview/llweb.cpp
@@ -148,6 +148,7 @@ std::string LLWeb::expandURLSubstitutions(const std::string &url,
 	substitution["GRID"] = LLViewerLogin::getInstance()->getGridLabel();
 	substitution["OS"] = LLAppViewer::instance()->getOSInfo().getOSStringSimple();
 	substitution["SESSION_ID"] = gAgent.getSessionID();
+	substitution["FIRST_LOGIN"] = gAgent.isFirstLogin();
 
 	// work out the current language
 	std::string lang = LLUI::getLanguage();