diff --git a/indra/llcommon/llstring.cpp b/indra/llcommon/llstring.cpp
index 57faba4e51..bcd5e30b1e 100644
--- a/indra/llcommon/llstring.cpp
+++ b/indra/llcommon/llstring.cpp
@@ -31,7 +31,6 @@
 #include "llfasttimer.h"
 #include "llsd.h"
 #include <vector>
-#include "llviewernetwork.h" // <FS/> Access to GridManager
 
 #if LL_WINDOWS
 #include "llwin32headers.h"
@@ -1629,17 +1628,12 @@ bool LLStringUtil::formatDatetime(std::string& replacement, std::string token,
         }
         else
         {
-// FIRE-34775 : Switch back to PST/PDT
-#ifdef OPENSIM
+#if 0
             // EXT-1565 : Zai Lynch, James Linden : 15/Oct/09
             // [BSI] Feedback: Viewer clock mentions SLT, but would prefer it to show PST/PDT
             // "slt" = Second Life Time, which is deprecated.
             // If not utc or user local time, fallback to Pacific time
-            if (LLGridManager::getInstance()->isInSecondLife()) {
-               replacement = "SLT";
-            } else {
-               replacement = LLStringOps::getPacificDaylightTime() ? "PDT" : "PST";
-            }
+            replacement = LLStringOps::getPacificDaylightTime() ? "PDT" : "PST";
 #else
             // SL-20370 : Steeltoe Linden : 29/Sep/23
             // Change "PDT" to "SLT" on menu bar