--- a/mobile/app/mobile.js
+++ b/mobile/app/mobile.js
@@ -350,17 +350,16 @@ pref("content.sink.pending_event_mode", 
 pref("content.sink.event_probe_rate", 5);
 pref("content.sink.interactive_deflect_count", 1000);
 pref("content.sink.perf_deflect_count", 10);
 pref("content.sink.interactive_parse_time",5000);
 pref("content.sink.perf_parse_time", 5000);
 pref("content.sink.interactive_time", 0);
 pref("content.sink.initial_perf_time", 0);
 
-pref("javascript.options.methodjit.chrome",  true);
 pref("javascript.options.mem.gc_frequency", 300);
 
 pref("dom.max_chrome_script_run_time", 30);
 pref("dom.max_script_run_time", 20);
 
 // JS error console
 pref("browser.console.showInPanel", false);