--- a/mobile/app/mobile.js
+++ b/mobile/app/mobile.js
@@ -359,17 +359,17 @@ pref("geo.enabled", true);
 // see https://bugzilla.mozilla.org/show_bug.cgi?id=481566#c9
 pref("content.sink.enable_perf_mode",  2); // 0 - switch, 1 - interactive, 2 - perf
 pref("content.sink.pending_event_mode", 0);
 pref("content.sink.perf_deflect_count", 1000000);
 pref("content.sink.perf_parse_time", 50000000);
 
 pref("javascript.options.mem.gc_frequency", 300);
 pref("javascript.options.mem.high_water_mark", 32);
-pref("javascript.options.methodjit.chrome", false);
+pref("javascript.options.methodjit.chrome", true);
 
 pref("dom.max_chrome_script_run_time", 0); // disable slow script dialog for chrome
 pref("dom.max_script_run_time", 20);
 
 // JS error console
 pref("devtools.errorconsole.enabled", false);
 
 // kinetic tweakables