From a4aa5233cad1fb66555e7768750af1b57bc1da7c Mon Sep 17 00:00:00 2001
From: Andrey Kleshchev <117672381+akleshchev@users.noreply.github.com>
Date: Wed, 2 Sep 2026 20:11:49 +0300
Subject: #6153 Fix missed 'multiple viewers' condition

---
 indra/newview/llappviewer.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index 6fef9e2512..386ffe9601 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -3135,7 +3135,9 @@ bool LLAppViewer::initConfiguration()
     // This happens AFTER LLSplashScreen::show(). That may or may not be
     // important.
     //
-    if (mSecondInstance && !gSavedSettings.getBOOL("AllowMultipleViewers"))
+    if (mSecondInstance
+        && !gGPUBenchmarkMode
+        && !gSavedSettings.getBOOL("AllowMultipleViewers"))
     {
         OSMessageBox(
             LLTrans::getString("MBAlreadyRunning"),
-- 
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