diff --git a/chrome/content/zotero/tabs.js b/chrome/content/zotero/tabs.js
index 66c280a2fb..c5c05daabf 100644
--- a/chrome/content/zotero/tabs.js
+++ b/chrome/content/zotero/tabs.js
@@ -30,10 +30,9 @@ var React = require('react');
 var ReactDOM = require('react-dom');
 import TabBar from 'components/tabBar';
 
-// Reduce loaded tabs limit if the system has 8 GB or less memory.
-// TODO: Revise this after upgrading to Zotero 7
-const MAX_LOADED_TABS = Services.sysinfo.getProperty("memsize") / 1024 / 1024 / 1024 <= 8 ? 3 : 5;
-const UNLOAD_UNUSED_AFTER = 86400; // 24h
+// Configure loaded tabs limit
+const MAX_LOADED_TABS = Zotero.Prefs.get("tabs.maxLoadedTabs");
+const UNLOAD_UNUSED_AFTER = Zotero.Prefs.get("tabs.unloadUnusedAfter");
 
 // Keep in sync with reader/src/common/components/sidebar/sidebar-resizer.js
 const SIDEBAR_DEFAULT_WIDTH = 240; // Pixels
diff --git a/defaults/preferences/zotero.js b/defaults/preferences/zotero.js
index 054b7bfd43..6845ad9208 100644
--- a/defaults/preferences/zotero.js
+++ b/defaults/preferences/zotero.js
@@ -235,6 +235,8 @@ pref("extensions.zotero.scaffold.eslint.enabled", true);
 
 // Tabs
 pref("extensions.zotero.tabs.title.reader", "titleCreatorYear");
+pref("extensions.zotero.tabs.maxLoadedTabs", 3);
+pref("extensions.zotero.tabs.unloadUnusedAfter", 86400);
 
 // Reader
 pref("extensions.zotero.reader.textSelectionAnnotationMode", "highlight");