diff --git a/user.js b/user.js
index 3661f81..f60b6f8 100644
--- a/user.js
+++ b/user.js
@@ -1207,6 +1207,9 @@ user_pref("pdfjs.disabled", false); // [DEFAULT: false]
 /* 2621: disable links launching Windows Store on Windows 8/8.1/10 [WINDOWS]
  * [1] https://www.ghacks.net/2016/03/25/block-firefox-chrome-windows-store/ ***/
 user_pref("network.protocol-handler.external.ms-windows-store", false);
+/* 2622: disable middlemouse paste leaking on Linux
+ * [1] https://bugzilla.mozilla.org/1528289 */
+user_pref("middlemouse.paste", false); // [DEFAULT: false on Windows]
 
 /** DOWNLOADS ***/
 /* 2650: discourage downloading to desktop