diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index 4032c20c44..2519bf8010 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -2212,9 +2212,10 @@ pref("ui.key.contentAccess", 5);
 pref("ui.key.menuAccessKeyFocuses", false); // overridden below
 pref("ui.key.saveLink.shift", true); // true = shift, false = meta
 
-// When true, overrides OS convention to lock content scrolling
+// When true, overrides Windows OS convention to lock content scrolling
 // if a contextual menu is open.
-pref("ui.menu.allow_content_scroll", false);
+// XXX: Only effective on Windows for now!
+pref("ui.menu.allow_content_scroll", true);
 
 // Disable page loading activity cursor by default.
 pref("ui.use_activity_cursor", false);