diff --git a/indra/newview/llimprocessing.cpp b/indra/newview/llimprocessing.cpp
index 0eeb264de0..2b7e22e23c 100644
--- a/indra/newview/llimprocessing.cpp
+++ b/indra/newview/llimprocessing.cpp
@@ -723,7 +723,7 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
     */
 
     // <FS:Zi> Omnifilter support
-    static LLCachedControl<bool> use_omnifilter(gSavedSettings, "OmnifilterEnabled");
+    static LLCachedControl<bool> use_omnifilter(gSavedSettings, "OmnifilterEnabled", false);
     if (use_omnifilter)
     {
         OmnifilterEngine::Haystack haystack;
diff --git a/indra/newview/llimview.cpp b/indra/newview/llimview.cpp
index 19a5d085c0..de479cabc5 100644
--- a/indra/newview/llimview.cpp
+++ b/indra/newview/llimview.cpp
@@ -3482,7 +3482,7 @@ void LLIMMgr::addMessage(
     // <FS:Zi> Omnifilter support
     std::string msg = original_msg;
 
-    static LLCachedControl<bool> use_omnifilter(gSavedSettings, "OmnifilterEnabled");
+    static LLCachedControl<bool> use_omnifilter(gSavedSettings, "OmnifilterEnabled", false);
     if (use_omnifilter)
     {
         // this is the type for new group IM sessions started - apparently this is the only place
diff --git a/indra/newview/llscriptfloater.cpp b/indra/newview/llscriptfloater.cpp
index 37b29ca453..64f3b87c8a 100644
--- a/indra/newview/llscriptfloater.cpp
+++ b/indra/newview/llscriptfloater.cpp
@@ -475,7 +475,7 @@ void LLScriptFloaterManager::onAddNotification(const LLUUID& notification_id)
     LLUUID object_id = notification_id_to_object_id(notification_id);
 
     // <FS:Zi> Omnifilter support
-    static LLCachedControl<bool> use_omnifilter(gSavedSettings, "OmnifilterEnabled");
+    static LLCachedControl<bool> use_omnifilter(gSavedSettings, "OmnifilterEnabled", false);
     if (use_omnifilter)
     {
         LLNotificationPtr notification = LLNotifications::instance().find(notification_id);
diff --git a/indra/newview/llviewermessage.cpp b/indra/newview/llviewermessage.cpp
index e65c97c98b..22f529a9f6 100644
--- a/indra/newview/llviewermessage.cpp
+++ b/indra/newview/llviewermessage.cpp
@@ -3252,7 +3252,7 @@ void process_chat_from_simulator(LLMessageSystem *msg, void **user_data)
         }
 
         // <FS:Zi> Omnifilter support
-        static LLCachedControl<bool> use_omnifilter(gSavedSettings, "OmnifilterEnabled");
+        static LLCachedControl<bool> use_omnifilter(gSavedSettings, "OmnifilterEnabled", false);
         if (use_omnifilter)
         {
             OmnifilterEngine::Haystack haystack;
diff --git a/indra/newview/omnifilterengine.cpp b/indra/newview/omnifilterengine.cpp
index b222dceaa0..ae7b882d99 100644
--- a/indra/newview/omnifilterengine.cpp
+++ b/indra/newview/omnifilterengine.cpp
@@ -69,7 +69,7 @@ const OmnifilterEngine::Needle* OmnifilterEngine::logMatch(const std::string& ne
 
 bool OmnifilterEngine::matchStrings(std::string_view needle_string, std::string_view haystack_string, eMatchType match_type, bool case_insensitive)
 {
-    static LLCachedControl<bool> use_omnifilter(gSavedSettings, "OmnifilterEnabled");
+    static LLCachedControl<bool> use_omnifilter(gSavedSettings, "OmnifilterEnabled", false);
     if (!use_omnifilter)
     {
         return false;