diff --git a/chrome/content/zotero/tabs.js b/chrome/content/zotero/tabs.js
index fa7f536db0..12890b49e1 100644
--- a/chrome/content/zotero/tabs.js
+++ b/chrome/content/zotero/tabs.js
@@ -30,9 +30,10 @@ 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.
+// Reduce loaded tabs limit if the system has 8 GB or less memory, or it's running
+// on Windows which means it doesn't support more than 3 GB
 // TODO: Revise this after upgrading to Zotero 7
-const MAX_LOADED_TABS = Services.sysinfo.getProperty("memsize") / 1024 / 1024 / 1024 <= 8 ? 2 : 5;
+const MAX_LOADED_TABS = Services.sysinfo.getProperty("memsize") / 1024 / 1024 / 1024 <= 8 || Zotero.isWin ? 2 : 5;
 const UNLOAD_UNUSED_AFTER = 86400; // 24h
 
 var Zotero_Tabs = new function () {