diff --git a/browser/app/profile/firefox.js b/browser/app/profile/firefox.js
index 01bff3600e89..92faa3e38c5f 100644
--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -458,7 +458,7 @@ pref("browser.urlbar.suggest.recentsearches",       true);
 pref("browser.urlbar.suggest.quickactions",         true);
 
 pref("browser.urlbar.deduplication.enabled", false);
-pref("browser.urlbar.deduplication.thresholdDays", 7);
+pref("browser.urlbar.deduplication.thresholdDays", 0);
 
 #ifdef NIGHTLY_BUILD
 pref("browser.urlbar.scotchBonnet.enableOverride", true);
diff --git a/browser/components/urlbar/UrlbarPrefs.sys.mjs b/browser/components/urlbar/UrlbarPrefs.sys.mjs
index 855332b62eb0..f2a66a098c7f 100644
--- a/browser/components/urlbar/UrlbarPrefs.sys.mjs
+++ b/browser/components/urlbar/UrlbarPrefs.sys.mjs
@@ -498,7 +498,7 @@ const PREF_URLBAR_DEFAULTS = new Map([
   ["deduplication.enabled", false],
 
   // How old history results have to be to be deduplicated.
-  ["deduplication.thresholdDays", 7],
+  ["deduplication.thresholdDays", 0],
 
   // When using switch to tabs, if set to true this will move the tab into the
   // active window.